Mathematics High School

8 + 3 (71 – 51)
Solve it's for a test!!!​

Answers

Answer 1

Answer:

68

Step-by-step explanation:

8 + 3 (71 – 51)

71-51= 20

20*3=60

60+8=68

Related Questions

I'll give brainliest Please help

-4n(5n+6)-5(3+3n)

Answers

Answer: -20n^2 - 39n - 15

Step-by-step explanation:

first, we remove the parenthesis (multiply everything out).

-20n^2 - 24n - 15 - 15n

then, we simply collect like terms.

-20n^2 - 39n - 15

Answer:

-20n^2-39n-15

Step-by-step explanation:

Given: -4n(5n+6)-5(3+3n)

Use the distributive property: -20n^2-24n-15-15n

Combine like terms: -20n^2-39n-15

Your simplified expression is -20n^2-39n-15

231 students went on a field trip. Four buses were filled and 23 students traveled in cars. How many
students were in each bus?

Answers

Answer:

52

Step-by-step explanation:

231-23=208

208÷4=52

Answer:

52

Step-by-step explanation:

Two types of sandwiches were made for a tea party. 55% of the sandwiches were chees e and the rest were chicken sandwiches. If there were 252 chicken sandwiches, how many sandwiches were made altogether?

Answers

Answer:

560 sandwiches were made

Step-by-step explanation:

set up a porportion.

45/252=55/x

45x=13860

x=308 cheese sandwichs

308+252=560

Answer:

560 sandwiches were made

Step-by-step explanation:

marke me brainlist

number is less than -8

Answers

Answer:

x < -8

Step-by-step explanation:

hopes this helps

i cant really explain this one

The width of DNA is approximately 0.0000000025 meter wide. In scientific notation, 6 times the width of DNA can be written as 1.5 x 10 meter.
What is the value of x?

Answers

The value of x is 15.0

HELP PLSSSSS. GUYS I NEED HELP LOL

Answers

Answer:

help with what

Step-by-step explanation:

Type the correct answer in each box. Use numerals instead of words.
Laurel wants to build a fence around her square garden. Each side measures 50 feet. She also wants to fence in 3 square rose beds next to her garden. Each side of a bed measures 10.5 feet. How many feet of fencing does Laurel need in all?

Laurel needs____ feet of fencing.

Answers

Answer:

326

Step-by-step explanation:

The fences required=

50×4←Sqare garden + (10.5×4)×3←three rose bed

=326feet

During a flood, James used two pumps to get the water out of his
basement. The big pump moves 3 gallons of water per minute. The
small pump moves 4 gallons in 5 minutes. How many more gallons
does the big pump move than the small pump after 10 minutes?

Answers

Answer:

The big pump moves 22 more gallons in 10mins

Step-by-step explanation:

The total the big pump moves is 30 gallons in 10mins because 3x10 = 30

The small pump moves 8 gallons in 10mins becuase 4x2= 8

Its asking for how many more so 30 - 8 = 22 More gallons

The measure of angle 1 is 3k - 7 and the measure of angle 8 is 5k + 29 29. What is the value of k
A: k= -18
B: k= 19.75
C: k= 36
D: k= 72

Answers

D: k= 36 it is that one because it’s a big number

Answer:

Its A k = -18

Step-by-step explanation:

Because since angle 1 and 8 are the same your equation is 3k-7 = 5k+29. and then you solve and get k = -18.

divide: x²-3x-33÷(x+4)​

Answers

x^3+x^2-12x-33/x+4

/ = seperator of numerator and denominator

Answer:here is the answer, I hope it helps you

Step-by-step explanation:

Is 17 smaller or larger than 50% of 60?

Answers

Answer:

smaller

Step-by-step explanation:

It is smaller because half of 60 is 30

PLEASE HELP
(07.06 MC)

What is the solution to the equation fraction 3 over 5 n minus fraction 4 over 5 equals fraction 1 over 5 n?

n = fraction 5 over 2

n = −1

n = fraction 5 over 3

n = 2

Answers

9514 1404 393

Answer:

  n = 5/3

Step-by-step explanation:

Eliminate fractions, add 4, divide by the coefficient of n.

  [tex]\dfrac{3}{5} n-\dfrac{4}{5}=\dfrac{1}{5}\\\\3n-4=1 \qquad\text{multiply by 5}\\\\3n=5 \qquad\text{add4}\\\\\boxed{n=\dfrac{5}{3}} \qquad\text{divide by 3}[/tex]

a. If you have $2.25, write an equation in standard form that models the number of nickels x and dimes y that you could have.

b. If you have 25 nickels, how many dimes do you have?

Answers

$2.25

5 x 21 = 1.05 10 x 12 = 1.20

Nickels: 21 Dimes: 12

1.05 + 1.20 = 2.25



If I had 25 nickels, I would have 12 dimes, and a extra 5 cents.

is y=x squared a linear or nonlinear function

Answers

Answer:

Linear. y = x also equals y = 1x, and you can put a line on a graph using this equation, hence the name linear.

Help Me! ASAP! What is the slope of the line?​

Answers

Slope = change in y (over) change in x.
Change in x =2
Change in y =1
So the answer is 1/2
Or 1 over 2

An egg carton holds 12 eggs. A breakfast buffet uses 96 eggs by
8 A.M. When the buffet ends at 10:30 A.M., a total of 156 eggs were
used. How many cartons
of eggs were used after 8 A.M.?

Answers

Answer:

13 Cartoons

Step-by-step explanation:

As, in 1 cartoon = 12 eggs

x cartoon = 156

X = 156 / 12

X = 13

Therefore, 13 Cartoons were used after 10:30 am

the value of k is ___.​

Answers

Answer:

There is no k in that graph

Step-by-step explanation:

given on km kk ml
prove kln mln

Answers

Answer:

i am bored in a house thats the only thing i could say

Step-by-step explanation:

help on math homework plz help​

Answers

Answer:

$1.40

Step-by-step explanation:

Subtract. 4.95-3.55 is 1.40

Answer:

the answer is $1.40

A pair of congruent angles are described as follows: The degree measure of one angle is three more than twice a number, and the other angle’s degree measure is 54.5 less than three times the number. Determine the measure of the angles in degrees

Answers

Answer:

The measure of the angles in degree is 57.5 degrees

Step-by-step explanation:

If two angles are congruent, they are equal in value

Let the number be x

2x + 3 = 3x-54.5

Thus;

3x-2x = 54.5 + 3

x = 57.5

i need help! asap please​

Answers

Answer:

-1/1

Step-by-step explanation:

it's negative 1 over one because the graph is constantly going down but still to the right side and the line is touching every corner of the boxes

The slope of a line that is perpendicular to this graph is 1

YALL I NEED HELP LIKE RIGHT NOW PLZ

Write the equation for the line shown below in slope-intercept form.
13
от
4
3
2
-1
2
3
4
-2
-3
4
Bi

Answers

-1/1 because it goes to the left once and up once so it will be one over one but it’s one the left side so it will turn negative so it will be negative one over one

Answer:

y=3x+4

Step-by-step explanation:

y=mx+b where m is the slope and b is y-intercept

y= (3/1)x+4

4a - 3 =
2a + 7
I need help

Answers

Answer:

a=5

Step-by-step explanation:

4a−3−2a=2a+7−2a

2a−3=7

2a−3+3=7+3

2a=10

2a /2 = 10 /2

a=5

Find the equation of the line that is perpendicular to the given line and passes through the given point. Enter your answer in slope-intercept form (y=mx+b) with the values of m and b given as decimals, rounded to the nearest hundredth if necessary.
y=2x;(9,-4)
The equation is y=

Answers

Answer:

y = -1/2x + 1/2

Step-by-step explanation:

perpendicular lines have slopes that are opposite signs and reciprocal

therefore, use m=-1/2 and point (9, -4) to complete the equation by finding 'b' (the y-intercept)

-4 = -1/2(9) + b

-4 = -9/2 + b

-4 + 9/2 = b

-4 + 4 [tex]\frac{1}{2}[/tex] = b

b =  [tex]\frac{1}{2}[/tex]

On Saturday, Ashley rode her bicycle to visit Maria. Maria's house is
directly east of Ashley's. The graph shows how far Ashley was from her
house after each minute of her trip.
What was her average speed for the entire trip?

Answers

Answer: The average speed she was going 16 m/s

Calculate the area of the figure and show your solving steps.

Answers

Answer:Area is a measure of how much space there is inside a shape.  Calculating the area of a shape or surface can be useful in everyday life – for example you may need to know how much paint to buy to cover a wall or how much grass seed you need to sow a lawn.

This page covers the essentials you need to know in order to understand and calculate the areas of common shapes including squares and rectangles, triangles and circles.

Calculating Area Using the Grid Method

When a shape is drawn on a scaled grid you can find the area by counting the number of grid squares inside the shape.In order to find an area value using the grid method, we need to know the size that a grid square represents.Count the grid squares inside the large square to find its area..

There are 16 small squares so the area of the large square is 16 square centimetres.

In mathematics we abbreviate 'square centimetres' to cm2.  The 2 means ‘squared’.

Step-by-step explanation:

4) A builder could get 3 sheets of sheetrock for $9. If he bought 5 sheets, how much money would he have spent?

Answers

Answer:

$15

Step-by-step explanation:

9/3=3 5*3=15

what is the distance between (4,3) and (0,6)

Answers

Answer:

it would be (3,7)

Step-by-step explanation:

I hope this helps

what is 84/1,000 as a decimal

Answers

Answer:

0.084

Step-by-step explanation:

Since 1,000 has three zeros, move the decimal from 84 three places to the left because when dividing, you need to move the decimal to the left.

84.  →  .084

So, the answer is 0.084

Hope this helps! :)

PLEASE ANSWER!! Scientists released 6 rabbits into a new habitat in year 0. Each year, there were four times as many rabbits as the year before. How many rabbits were there after x years? Write a function to represent the scenario. PLS ANSWER SOMEONE I NEED HELPPP
:(((

Answers

Answer: d

Step-by-step explanation:

Answer:

y=3

Step-by-step explanation:

y=x so y=3x

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