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zysi [14]
3 years ago
14

9d + 4 = 2d + 53 Can someone tell me what d stands for?

Mathematics
1 answer:
lara31 [8.8K]3 years ago
7 0

Answer:

d=7

Step-by-step explanation:

To find d youll have to find it. 9d + 4 = 2d + 53 minus 2d on both sides> 7d+4=53 now minus 4 on both sides> 7d=49 divide 49/7 > d=7

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What’s the evaluation to 5x(2) + x for x =3
Mashcka [7]

Answer:

48

Step-by-step explanation:

5 x^2 +x

Let x = 3

5 * 3^2 +3

Exponents first

5 * 9+3

Multiply next

45+3

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5 0
3 years ago
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This week laptops are 25% off. If a laptop costs $340, what is its sale price?
Alexandra [31]

____________________________________________________

Answer:

Your answer would be $255

____________________________________________________

Step-by-step explanation:

To solve these kind of problems, what we have to do is find how much of 340 is 25%, and then subtract that number to the original price.

Let's give you some important information in the text:

  • 25% off
  • $340

With the information above, we can solve our problem.

First, we would need to find how much of 340 is 25%, and to do that, we would multiply 340 by 0.25:

340*0.25 = 85

When you solve, you should get 85. But, you're not done yet, we need to find out how much the sales price is, not how much of it is discounted.

In order to find the sales price, we would get our original number (the number it originally cost), and subtract it with the amount of money it's removing (85).

In this case, we would subtract 340 by 85.

340-85=255

Your FINAL answer should be 255

The sales price of the laptop would be $255.

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5 0
3 years ago
Which of the following is a rule for a rotation?
Nata [24]

Answer:

Hiiiii, the answer is (x,-y)

Step-by-step explanation:

4 0
2 years ago
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Which exponential function has an initial value of 2?<br><br> f(x) = 2(3x)<br><br> f(x) = 3(2x)
Sidana [21]
<span>f(x) = 2(3x)
Exponential functions represent the initial value outside of the parentheses so if 2 is the initial value it has to be on the outside of the parentheses. 
Exponential growth formula.
</span>y=a(1+r)^{x}
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7 0
3 years ago
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1. PART A: Determine the missing lengths:
Otrada [13]

#1

Divide into two rectangles

\\ \tt\hookrightarrow "1"=14-12=2

\\ \tt\hookrightarrow "2"=3+1=4

#2

\\ \tt\hookrightarrow P=14+1+12+3+2+4=36

#3

\\ \tt\hookrightarrow A=14(1)+3(2)=14+6=20units^2

3 0
2 years ago
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