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Stolb23 [73]
3 years ago
9

If x=3 what is the value of the following expression ?

Mathematics
1 answer:
guajiro [1.7K]3 years ago
8 0

Answer:

8

Step-by-step explanation:

X^2 -2x +5

3^2 - 2×3 + 5

9 - 6 + 5

14 - 6

8

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What is?<br><br> y=x+5<br> 2y-x=13
mixer [17]

Answer:

x=3

y=8

Step-by-step explanation:

y-x=5

2y-x=13

subtract

-y=-8

y=8

8-x=5

x=8-5=3

5 0
3 years ago
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Pls help I can’t solve this
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Answer:

61.6 - 31.4 - 8 - 138. So, A to F, F to J, J to K, and K to Escape

Step-by-step explanation:

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C=2πr

To find Area:

A=πr2

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3 years ago
Which of the following are arithmetic sequences? Check all that apply.
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3 years ago
Turn 10+ negative 3 3/8 into a single rational number
natta225 [31]

Answer:

the answer for this question is

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3 0
4 years ago
What is the product? (9 t minus 4)(negative 9 t minus 4) negative 81 t squared minus 16 negative 81 t squared + 16 negative 81 t
liraira [26]

The product is negative 81 t squared + 16 ⇒ 2nd answer

Step-by-step explanation:

The product of two binomials (ax + b)(cx + d), where a, b, c, and d are constant

  • Multiply (ax) by (cx) ⇒ 1st × 1st
  • Multiply (ax) by (d) and (b) by (cx) ⇒ ext-reams and nears
  • Add the two products ⇒ like terms
  • Multiply (b) by (d) ⇒ 2nd × 2nd

Let us find the product of (9 t - 4) and (-9 t - 4)

Multiply the 1st two terms

∵ (9 t)(-9 t) = -81 t²

Multiply the ext-reams

∵ (9 t)(-4) = -36 t

Multiply the nears

∵ (-4)(-9 t) = 36 t

Add the like terms

∵ -36 t + 36 t = 0

Multiply the 2nd two terms

∵ (-4)(-4) = 16

Write the answer

∴ (9 t - 4)(-9 t - 4) = -81 t² + 0 + 16

∴ (9 t - 4)(-9 t - 4) = -81 t² + 16

The product is  -81 t² + 16

Learn more:

You can learn more about the product of algebraic expressions in brainly.com/question/1617787

#LearnwithBrainly

7 0
4 years ago
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