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myrzilka [38]
3 years ago
12

What is the value of the expression 8x - 10 when x = 5?

Mathematics
2 answers:
aleksandr82 [10.1K]3 years ago
7 0

Answer:

30

Step-by-step explanation:

8x-10

8(5)-10

40-10

30

xxTIMURxx [149]3 years ago
4 0

Answer:

30

Step-by-step explanation:

8x-10=?

where x is 5

All you have to do is replace the x in the equation 8x-10 with a 5.

Therefore, the equation will look like this.

8(5)-10

8(5)=40 Take the 40-10 and you get 30.

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IgorLugansk [536]
A dilation by a scale factor of 6 will cause the radius to increase by a factor of 6. So r_{new} = 6r. If we plug this value of r into the formula for the circumference of a circle we get C = 2\pi r_{new} = 2\pi *6r = 12\pi r

So basically N = 12r. You haven't given me any original radius, so I can't give you a constant for N, but if you do have that original radius you can just plug that into 12r.

Based on your comment, N = 12 * 9 = 108 inches
8 0
3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
Zack has a old car. He wants to sell it for 60% off the current price. The market price is $500. How much money would he receive
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6 0
3 years ago
Triangle PQR and triangle XYZ are similar. The length of PQ= 4 inches, PR = 9 inches and QR = 12 inches. The length of the short
defon

<em><u>Simplified </u></em><em><u>Recap:</u></em>

PQR and XYR are similar.

PQ: 4 inches (shortest side)

PR: 9 inches

QR: 12 inches (longest side)

<em><u>Solving:</u></em>

Because they are similar triangles, we know that the sides of one triangle are proportional to the ones on the other. Therefore, the smallest side of PQR is proportional to the smallest side of XYZ. Now, we just need to figure out the constant of proportionality , and we can do that by dividing the smallest side of XYZ triangle by the smallest side of PQR.

16 \div 4 = 4

Now we know that the constant of proportionality is 4. All we have to do now is solve the problem. The question is asking what the longest side of XYZ is, and to find that we just need to multiply the longest side of PQR by our constant of proportionality.

12 \times 4 = 48

Therefore, our answer is 48.

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3 years ago
Factor the expression completely -7r-35x
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7 is the most common in this expression.

therefore to factorise, you will choose the most common factor.

the answer will be -7(r+5x)

7 0
3 years ago
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