Answer:
(- 1, 7 )
Step-by-step explanation:
Given the 2 equations
3x - 4y = - 31 → (1)
- 3x - 3y = - 18 → (2)
Adding the 2 equations term by term will eliminate x, that is
0 - 7y = - 49
- 7y = - 49 ( divide both sides by - 7 )
y = 7
Substitute y = 7 into either of the 2 equations and solve for x
Substituting into (1)
3x - 4(7) = - 31
3x - 28 = - 31 ( add 28 to both sides )
3x = - 3 ( divide both sides by 3 )
x = - 1
solution is (- 1, 7 )
Answer:
-1and 7 hope it helpssss
what would this be!?
Answer:
Well sum up the angles then do that and subtract it from 180Then you get 148Answer:
you do 124+18 which is 142
and then you do 180 -142 because a triangle adds to 180
this equals 38
After this you then do 180-34 because angles on a straight line equal 180
this gives you the answer of 142
pls help I will give brainliest
Answer:
1. cm
2. mm
3. km
4. mm
5. m
6. ml
7. L
Step-by-step explanation:
may it help you if not forgive me
Help plzzzzzzzzzzzzzz show work
Answer:
x=0
Step-by-step explanation:
∵ △ABC~△AED
∴
[tex] \frac{ AE }{ AB } = \frac{ED}{ BC} \\ \frac{4}{10} = \frac{8}{x + 20 } \\ 4x + 80 = 80 \\ 4x = 0 \\ x = 0[/tex]
Help fast 15 points
Answer:
1/4
Step-by-step explanation:
can someone plz help me
Answer:
118 inches
Step-by-step explanati
1 yard is 36 inches, so you just do the math
36+36+36=108+10=118
Find the value of y when x=3
y=x+5
y= ?
For which value 0 is the statement sin 40= cos 0 true ?
Answer:
50°
Step-by-step explanation:
sin 40° = cos 50°
Hope it helps you in your learning process.
Kala purchased a prepaid phone card for $25. Long distance calls cost 8 cents a minute using this card. Kala used her card only once to make a long distance call. If the remaining credit on her card is $21.48, how many minutes did her call last?
Answer:
44 minutes
Step-by-step explanation:
25.00-21.48=3.52
this means she used $3.52
which is 352 cents.
Each minute is 8 cents so 352/8 = 44
Find the median marks for the following distribution:
Classes
Number of students
0-10
2.
10-20
12
20-30
22
30-40
8
40-50
6
Answer:
10
Step-by-step explanation:
2+12+22+8+6=50
Median =50/5=10
PLEASE HELP THIS IS DUE TODAYYYY
Answer:
Choice 4
Step-by-step explanation:
hope this helpss :))
The length of a rectangular building is 4 feet more than 3 times the width. The perimeter is 84 feet. Find the width and length of the building.
Answer:
Width=9.5, Length=32.5
Step-by-step explanation:
Let x be the width of the rectangle,
The length is 4 feet more than 3 times the width,
The length= 3x+4
The perimeter is
2(x)+2(3x+4)=84
2x+6x+8=84
8x=76
x=76/8
x=9.5
The Width=9.5
Length= 3(9.5)+4=32.5
omg someone find tbe perimeter of this shape for me. ill give brainliest
Answer:
32
Step-by-step explanation:
18+14
*If you add two integers with different signs, how can you tell whether the sum will be positive, negative, or zero?
Answer:
Please see explanation
Step-by-step explanation:
When two integers are being added there can be three cases in the answer
PositiveThe sum will be positive if both the integers are positive and in case of addition of one positive and negative integer, the sum will be positive if the integer with larger magnitude is positive
NegativeThe sum will be negative if both integers are negative and in case of addition of one positive and negative integer, the sum will be negative if the integer with larger magnitude is negative
ZeroThe sum will be zero if both the integers have same magnitude and different signs.
A scientist measures the change in the temperature of a chemical solution. At the start of the experiment, the solution is at a temperature of -14.96ºC. The temperature decreases 2.9ºC each hour. 1️⃣ Find the temperature of the solution after 3 hours. 2️⃣ Find the temperature of the estimated solution after 3 hours.
Answer:
-6.26°C
Step-by-step explanation:
Given that:
Initial temperature = - 14.96ºC
Temperature change per hour = 2.9ºC
Hence, the temperature of the solution after 3 hours can be obtained thus :
Final temperature = (initial temperature + (temperature change per hour * Number of hours))
Temperature after 3 hours :
-14.96 + 2.9(3)
-14.96 + 8.7
= - 6.26
Hey smart math people help me please
Answer: First off thats not how you ask for help, by calling us "smart math people" that could offend someone...Second off the answer is 10 because
Step-by-step explanation:
A^2 + B^2 = C^2
6^2 + 8^2 = C^2
36 + 64 = 100 square root that = 10
Answer: 10
Answer:
10
Step-by-step explanation:
[tex]a^{2} + b^{2} = c^{2}[/tex] : Pythagorean Theorem
[tex]6^{2} + 8^{2} = c^{2}[/tex] ⇒[tex]36+64=c^{2}[/tex]
[tex]36+64=c^{2}[/tex] ⇒ [tex]\sqrt{100} = \sqrt{c^{2} }[/tex]
10
Consider the equation
−9x+2y=−4
A line parallel to the above line would have a slope of _____
A line perpendicular to the above line would have a slope of ____
Please help
Answer:
slope of line parallel to given line=slope of given line
=9/2
slope of line perpendicular to given line=‐1/slope of given line
= -2/9
Solve: x/9 + 17 = 35
Answer: x=910
Step-by-step explanation:
Look at attachment
Ok guys im doing algebra
Joe had a summer job that pays $7.00 an hour and he worked between 15 and 35 hours every week
Domain:
Range:
:0 ur welcome
brainliest plz
help me please i literally don’t know what i’m doing
Answer:
the answer is 40 + 15i
Step-by-step explanation:
lol
What is the equation, in point-slope form, of the line passing through the point (8, -3) with a slope of 5?
y + 3 = 5(x - 8)
y - 3 = 5(x + 8)
y - 5 = 8(x - 3)
y + 8 = -3(x + 5)
Answer:
y - y1 = m*(x - x1) where m = slope and (x1,y1) is the point. hope it helped
Step-by-step explanation:
the equation of line L is 2x+y=3 line M is parallel to line L and passes through (1,-6) work out the equation of line give your answer in the form y=ax+b
Answer:
y=-2x-4
Step-by-step explanation:
Took Gage 1 of a gallon of paint to create a mural of his favorite team the Grizzlies. He was asked to replicate his mural for 8 different businesses in Memphis. How much paint will he need for the 8 other murals?
Answer: He will need 8 gallons of paint for the other murals.
Step-by-step explanation:
Given: 1 gallon of paint was required to create 1 mural.
Since replicates have the same dimensions, i.e same total surface area.
So, if 8 replication need to be made, the quantity of the paint required for this will be
8 x (Quantity required for 1 mural)
= 8 x 1
= 8 gallons
Hence, he will need 8 gallons of paint for the other murals.
What is the value of the expression 200^-3
Answer:
1/200^3 or 1 /8,000,000
Step-by-step explanation:
The temperature in Anchorage, Alaska, is -13°C, and the temperature in Nome, Alaska, is -31°C. Which of the following is true?
A.
Anchorage's temperature = Nome's temperature
B.
Anchorage's temperature > Nome's temperature
C.
Anchorage's temperature < Nome's temperature
Answer:
B. Anchorage's temperature > Nome's temperature
Step-by-step explanation:
Use the least common denominator to write an equivalent fraction for each fraction. 2 6 , 7 8 The least common denominator is 24 . 2 6 can be rewritten as __ and 7 8 can be rewritten as __
Answer:
2/6 = 48/144
7/8 = 168/192
Step-by-step explanation:
Use the least common denominator to write an equivalent fraction for each fraction. 2/6 , 7/8 The least common denominator is 24 .
2/6 can be rewritten as __
We Multiply both numerator and Denominator by 24
48/144
7/8 can be rewritten as __
We Multiply both numerator and Denominator by 24
168/192
A certain function is represented by Rx) = -4 x2-3x+ 2.
What is the value of f(-2)?
Answer:
f(- 2) = - 8
Step-by-step explanation:
To evaluate f(- 2) , substitute x = - 2 into f(x), that is
f(- 2) = - 4(- 2)² - 3(- 2) + 2
= - 4(4) + 6 + 2 = - 16 + 8 = - 8
pls help me!!
2. In this polygon, which angle is an exterior angle?
Answer:
b jwtvd vgakdbbfqbbbq8jrbw5rl17rgsndbgwy
Describe a situation that is defined by the linear equation P = 40 + 22t. ASAP HELP
Answer:
Step-by-step explanation:
P could be the price for working as a dog sitter where you ask for $40 to be payed every time you show to work so you can clean the hair off your clothes at the cleaner after work, plus $22 for every hour t you work .
Last month, Diego's neighbors paid him to take care of their fish when they went on vacation. He spent $13 of his earnings on a book and $9 on some art supplies. Afterward, he had at most $10 left. How can you best describe how much Diego's neighbors paid him?
Answer:
here!<3
Step-by-step explanation:
A: 9 + 13 + 10 is equal to or less than C
B: 32 is equal to or less than C
Step-by-step explanation:
How I got A:
in order to solve this you have to add 9, 13, and 10.
don't solve it right away, but write every number out individually.
It says in the problem, "Afterward he had AT MOST $10".
With this we know we need a sign other than equal to.
if the amount was at most $10, we need to use equal to or less than.
I chose equal to or less than because it says AT MOST, so the amount he was pain will be equal to, or less than all of then numbers given to us added.
How I got B:
I added 9, 13, and 10.
The sum of these numbers is 32
C is our variable, because we don't know how much they paid him
32 is equal to or less than C
Hope this helps <3
- 4/7 divided by 1 3/4
Answer:
0.32653061224
Step-by-step explanation:
To write 0.32653061224 as a fraction you have to write 0.32653061224 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.
0.32653061224 = 0.32653061224/1 = 3.2653061224/10 = 32.653061224/100 = 326.53061224/1000 = 3265.3061224/10000 = 32653.061224/100000 = 326530.61224/1000000 = 3265306.1224/10000000 = 32653061.224/100000000 = 326530612.24/1000000000 = 3265306122.4/10000000000 = 32653061224/100000000000
And finally we have:
0.32653061224 as a fraction equals 32653061224/100000000000
