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Contact [7]
2 years ago
6

Need help with two of these! Thank you

Mathematics
1 answer:
astraxan [27]2 years ago
6 0

Step-by-step explanation:

17) 3x+5-12+4x+2x

3x+4x+2x +5-12

8x-7

if x =6

8*6-7 =48-7

= 41

18.) 9(3x-4y+8)

27x-36y+72

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Select the system of linear equations that has the solution (-6, 0).
xxTIMURxx [149]

Answer:

B.

• x+2y=-6

• x-2y=-6

Step-by-step explanation:

Try the solution in the equations and choose the set of equations that is true.

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A. -6+0 ≠ 0 . . . not this system

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B. -6 +2·0 = -6 . . . true

-6 -2·0 = -6 . . . true . . . . . this system has solution (-6, 0)

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C. -6 -6·0 ≠ 1 . . . not this system

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D. 4(-6)+3·0 ≠ -18 . . . not this system

3 0
2 years ago
Pls help will give brainliest!!
klio [65]

25 × 4 = 100 - the number of all candies

2/5 of 100 is

\dfrac{2}{5}\cdot100=\dfrac{200}{5}=40

The third model is shaded to show the total number of caramel candies in 4 bags.

6 0
3 years ago
What is the product?
Advocard [28]
No answer isWright it should be -18x + 45

Plz comment if I’m wrong
7 0
3 years ago
Read 2 more answers
Bill hiked 4 miles than 3 times the amount hit friend hiked. Write an expression that represents the amount of miles bill has hi
Yuki888 [10]

Answer:

x3 + 4

Step-by-step explanation:

Scince Bill's friends amount of miles is unkown its x, and times it by three since it says times, and then add 4 since it says more than! Hope this helps! There is a really good website called Khan Academy and it explains everything! Just search in google your topic and say khan academy at the end and you will get practices and videos! Good luck!

5 0
3 years ago
What is the value of the expression x^2y–y+xy^2–x for x=4 and y=0.25?
stepan [7]

Answer:

0 (zero)

Step-by-step explanation:

{x}^{2} y - y + x {y}^{2}  - x  \\  =  {4}^{2} \times  0.25 - 0.25 + 4 \times  {0.25}^{2}  - 4 \\  = 16 \times  0.25 - 0.25 + 4 \times  0.0625- 4  \\  = 4 - 0.25 + 0.25 - 4 \\  = 0 \\  \\  \purple {\boxed{ \bold{ \therefore \:  {x}^{2} y - y + x {y}^{2}  - x  = 0}}}

8 0
3 years ago
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