Mathematics Middle School

Find the output, k, when the input, t, is -7.
k = 10t -19
k=?

Answers

Answer 1

Answer:

-89

Step-by-step explanation:

k = 10(-7) - 19

k = -70 - 19

k= -89

Answer 2

Answer:

k=-89

Step-by-step explanation:

to understand the solving stepsyou need to know about:algebraPEMDASgiven:

k=10t-19

t=-7

to find:

k

let's solve:

k=10t-19 (given)

k=10.-7-19 (as t=-7)

k=-70-19 (multiply)

k=-(70+19) (factor out negative sign from the expression)

k=-(89) (add)

k=-89

Related Questions

PLEASE HELP!

A forest covers 54.000 acres. A survey finds that 0.8% of the forest is old-growth trees. How many
acres of old-growth trees are there?

There are a ( )acres of old-growth trees.

(Type an integer or a decimal)

Answers

Answer:

0.43

Step-by-step explanation:

0.008(54)=x

(54)= 0.43

Answer: 432 Acres

Step-by-step explanation:

54,000 ÷ 100 = 540 x 0.8 = 432

Calculate the area of the regular pentagon below.

Answers

Answer: 343.42 I think sorry if it’s wrong

Step-by-step explanation:

Here are the prices of some items and the amount of sales tax changed on each item in Texas. What is the sales tax rate in Texas?

Answers

The answer should be 6.25 percent I hope I helped

A bookcase has 6 shelves.
• Anna has 130 books.
• She puts an equal number of books on each shelf.
• There are 4 books left over.
How many books are on each shelf?

Answers

Answer:

21 books are on each shelf.

Step-by-step explanation:

To solve this you need to divide 130 and 6 so you should get 21 with a remainder of 4 which is the amount of books on each shelf and the amount of books that are left over.

I hope this helps :D

help me plz whoever helps thank you

Answers

Answer:

B, 51, 60, 69

Step-by-step explanation:

15 + 9 = 24

24 + 9 = 33

33 + 9 = 42

So the next numbers should be 9 "away" from the previous number.

42 + 9 = 51

51 + 9 = 60

60 + 9 = 69

So the answer is B

A produce store offers red and green apples. In one morning they sold 60 apples total. If 18 of the apples they sold were red, what is the ratio of green apples sold to red apples sold?

Answers

Answer:

7:3

Step-by-step explanation:

60 apples sold

18 were red

? were green

60-18=42

UN simplified ratio= 42red:18green

simplified ratio= 7:3 bc 42:18 divided by 6 is 7:3

Answer:

7:3

Step-by-step explanation:

If the store sold 60 apples total and 18 of them are red to find the ratio subtract 18 from 60. You will then get 42:18 as the ratio. That can be simplified by dividing 42 and 18 by 2. Then your new ratio will be 21:9. That can be simplified even more by dividing 21 and 9 by 3. Now you have your final answer 7:3. For every 7 green apples sold 3 red apples will be sold. I hope that helped. :)

............................

Answers

Answer:

1/6

Step-by-step explanation:

1/6 because there are 6 sides and out of the 6 sides there is one side of the number 5 on it.

hope this helps!

Answer:

B

Step-by-step explanation:

Which statement compares the two numbers correctly?

7 x 10 + 3 x 1 + 3 x 0.1 + 8 x 0.01 + 5 x 0.001 ________ 73.293

7 x 10 + 3 x 1 + 3 x 0.1 + 8 x 0.01 + 5 x 0.001 7 x 10 + 3 x 1 + 3 x 0.1 + 8 x 0.01 + 5 x 0.001
7 x 10 + 3 x 1 + 3 x 0.1 + 8 x 0.01 + 5 x 0.001 > 73.293

Answers

Answer:

the second one!

for brainliest

Step-by-step explanation:

What percent of 134 is 66? (To the nearest tenth of a percent)

Answers

Answer:

66 is 49.2537313% of 134

Step-by-step explanation:

so 49.26

Percent of 134 is 66 is 49 percent so 50 is answer for rounding to tenth of percent

Unless each number need to be rounded to tenth lmk

66 to tenth is70

13

I'm not very good at math so I really need help​

Answers

Answer:

C

Step-by-step explanation:

-15 x 2x = -30x

-15 x -6 = 90

Answer:

c)-15(2x-6)

Step-by-step explanation:

i think!

A jewelry box containes 3 rings, 7 necklaces, 4 earrings, 5 braceletes and 1 tiara. If 1 piece of jewlery is selected at radom, which two statements are true?

a it is just as likely as not that a ring or necklace will be selected.
b It is impossible that a tiara will be selected.
c It is certain that a necklace will be selected.
d It is likely that earrings or a bracelet will be selected.
e it is unlikely that a tiara will be selected.

Answers

Answer:

A and E

Step-by-step explanation:

A because there are 3 rings and 7 necklaces, so there is a high chance they will be picked. But because there are earrings, braceletes, and one tiara, its not 100% cirtain that the rings or necklaces will be picked.

E because there is only one tiara. There are way more of all the other pieces of jewelry. But if its a choice to be picked there is a small chance it could be chosen.

Use the Distributive Property to rewrite the algebraic expression: 5(2x+7)

Answers

Answer:

10x+ 35

Step-by-step explanation:

If you multiply you get that answer because 5*2= 10 and 5*7= 35 so 10x+ 35 would be correct. Hope this helps, let me know if correct, and have a great day!!

billy was shooting hoops and got 30 out of 40 shots in on monday and 76% in on tuesday on which day did he shoot better

Answers

The answer is Tuesday

Answer:

the aswser is tuseday

Step-by-step explanation:

Geoff earns 10% commission on his total sales at work.

To pay for a concert ticket, Geoff needs to earn $135 in commission. What must Geoff’s sales total for the week?

Answers

Answer:

$1350

Step-by-step explanation:

10% of 1350= 135 meaning the sales total wes 1350.

have a good day!

Answer:

$1350

Step-by-step explanation:

Percentage commision earned = 10%

Amount needed to pay for concert = $135

Hence, total sales for the week must be :

Let total sales = x

10% of total sales = $135

10/ 100 * x = $135

0.1x = $135

x = $135 / 0.1

x = $1350

What do I plug into a calculator to find 431 increased by 16%?

a
431 x 0.17
b
431 x 1.16
c
431 x .16
d
431 x 16

Answers

D is the answer I took the test
The answer is B

This is the answer because you are multiplying 431 by 1 (or 100%) to find your total without the 16% added, then you are figuring out the last 16% added onto figure out your total value.

QUESTION IS IN PICTURE PLEASE HELP ASAP DONT SKIP

Answers

Answer:

y=4.5x+22 (4.5 goes in first box, 22 goes in second box).

Step-by-step explanation:

For starters, you can use that line in the middle, a.k.a. the line of best fit, to help set up your equation.

The equation is in slope-intercept (y=mx+b) form, where m is slope and b is y-intercept.

From the given numbers and the graph, it looks like the y-intercept is about 22 so you can drag the 22 in the last box, where the 'b' should be. your equation is now y=mx+22.

For the slope, just calculate rise over run. I've counted and gotten about 9/2, which equals 4.5 (which is in the choices), which is your slope.

Your final equation is now y=4.5x+22. Hope this helps.

1.2t - 1.44 = 0.25t
solve for t
please explain step by step

Answers

Answer:

t = 0.99

Step-by-step explanation:

1.2t - 1.44= 0.25t

first, we add 1.44 to both sides to move it

1.2t - 1.44 = 0.25t

     +1.44    +1.44

______________

1.2t = 0.25t + 1.44

second, we want to solve for t, so we must get the variable alone (add 0.25t to 1.2t)

1.2t = 0.25t + 1.44

+0.25t  +0.25t

1.45t = 1.44

third, to get t alone we must divide by 1.45 on both sides

1.45t = 1.44

t = 0.9931034483

rounded this would be 0.99

Answer:

Step-by-step explanation:

So we have an equation. Let's combine like terms.

1.2t-0.25t=1.44

Now let's solve.

0.95t=1.44

We don't have a whole variable, so let's make it whole.

95t=144

Now we can solve. Let's divide both sides by 95.

t=1.5157894737

That's a long decimal. Let's round it.

t=1.5

The hole for a support needs to be 5 feet deep. It is currently 2 feet 5 inches deep. How much deeper must the hole​ be? Factor 12 inches/ 1 foot

Answers

Answer:

2feet 7 inches

Step-by-step explanation:

the hole must me 2ft 7in deeper in order to be 5ft deep

CAN SOME ONE PLZ HELP I NEED HELP
asia new boat has a cruising speed of 27 mph at that rate how long will it take to travel the 3 miles

Answers

Answer:

9

Step-by-step explanation:

We need to find the rate which is 27 divided by 3 which is 9

PLEASE HELP!!!!!!!!!!!!

Answers

Answer:

P = 8.9k

Step-by-step explanation:

To find the perimeter, you need to add all three sides of the triangle.

P = (1.8k - 5) + (3.5 + 6.1k) + (k + 1.5)

Because you are adding all three expressions, you can remove the parentheses.

P = 1.8k - 5 + 3.5 + 6.1k + k + 1.5

Now you want to combine the variable (k).

P = (1.8k + 6.1k + k) - 5 + 3.5 + 1.5

P = (8.9k) - 5 + 3.5 + 1.5

Now you want to combine the constants.

P = (8.9k) - 0

You are left with:

P = 8.9k

Yes this shed d d d. D d d d

Joe has 18 more than 4 times the number of toy cars as Marcia. Joe has at least 86 toy cars. What solution represents the number of toy cars, c, Marcia can have?

Answers

Answer:

 Marcia has 17

Cx4+18=86

86-18=68/4=17

He has 17
Dnaksnjaak

need help asap
will give brainly

Answers

It’ll be the second choice (3,4)
Because you reflect off the y-axis, the formula will be (-x,y). Therefore, the answer is (3,4).

Two lines, C and D, are represented by the following equations: Line C: y = x + 5 Line D: y = −2x − 1 Which of the following options shows the solution to the system of equations and explains why? (4 points) Group of answer choices (−2, 3), because one of the lines passes through this point (−2, 3), because the point does not lie on any axis (−2, 3), because both lines pass through this point (−2, 3), because the point lies between the two axes

Answers

Answer:

(−2, 3), because both lines pass through this point

Step-by-step explanation:

Answer:

(−2, 3), because both lines pass through this point

Step-by-step explanation:

Help is needed ! Leave a comment below if help is needed !

Answers

Answer:

Adding 1 every time if you can tell

Step-by-step explanation:

Answer:

old

Step-by-step explanation:

Round 0.0078 to the nearest thousandths.
0.0078
0.008
0.0088
0.08

Answers

Answer:0.0088

Step-by-step explanation:

At camp, ¼ of the children are divided into 3 equal groups for crafts. What fraction of the children at camp are in EACH group?

Answers

Answer:

3/4?

Step-by-step explanation:

maybe not but i think this is it

3/4........…............

help again I ONLY HAVE 20 MIN-

Answers

Answer:

the answer is

2 (y-16)

_______

3

I only 1 minute left on my test!

In the figure, the hexagon with the “R” is colored red, and each of the other hexagons will be colored red, yellow or green, so that no two hexagons with a common side are the same color. In how many different ways can the figure be colored?

Answers

Answer:

2 ways

Step-by-step explanation:

2 ways that is the answer

Deb borrows $3190 at 2.9% simple interest per month. When Deb pays the loan back 5 years later, what is the total amount that Deb ends up repaying?

Answers

Answer:

$3,282.51

Step-by-step explanation:

you take 3,190 times 2.9% and get $92.51, add that to 3,190 and get $3,282.51! hope this helped!

Answer:

$3652. 55

Step-by-step explanation:

A = P(1 + rt)

P = 3190

r = 0.029 (percent in decimal form)

t = 5 years

A = 3190(1 + (0.029)(5))

A = 3190(1 + .145)

A = 3190(1.145)

A = $3652. 55

me need more help on homework why is it hard

Answers

Answer:

A: 3

B: 276

Step-by-step explanation:

Answer:

A. There are 4 pairs of rectangles

B. I think that the area is 216

Step-by-step explanation:

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