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3 years ago

Help please anyone...

Mathematics

1 answer:

dybincka [34]3 years ago

8 0

Answer:

A.) -5

Step-by-step explanation:

-3×-5 = 15 (two negatives equal a positive)

15-4 = 11 which is greater than 7

feel free to mark brainliest if this helped you :)

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45°

ioda

Answer:

$x = \sqrt{\frac{7}{2} }$

Step-by-step explanation:

Explanation

From given graph

AC = √7

Given angle ∝ = 45°

$cos\alpha = \frac{adjacentside}{Opposite side}$

$cos45 = \frac{x}{\sqrt{7} }$

$\frac{1}{\sqrt{2} } = \frac{x}{\sqrt{7} }$

$x = \frac{\sqrt{7} }{\sqrt{2} }$

$x = \sqrt{\frac{7}{2} }$

x = 1.8708

7 0

3 years ago

PLEASE ANSWER ASAP!!! 45 POINTS!

zalisa [80]

Answer:

x =2 $\\\sqrt{24$

Step-by-step explanation:

a2+b2=c2

(10*10)+(8*8)=x

5 0

3 years ago

Solve 2x^2 − 8x = −7

kenny6666 [7]

Answer:

The answer to your question is below

Step-by-step explanation:

2x² - 8x = - 7

Divide by 2

$\frac{2}{2} x^{2} - \frac{8}{2} x = \frac{-7}{2}$

Complete the trinomial

$x^{2} - 4x + (2)^{2} = \frac{-7}{2} + (2)^{2}$

Simplify

$x^{2} - 4x + (2)^{2} = \frac{- 7 + 4}{2}$

$x^{2} - 4x + 4 = \frac{-3}{2}$

Factor

(x - 2)² = $\frac{-3}{2}$

Get the square root

$\sqrt{(x - 2)^{2}} = \sqrt{\frac{-3}{2}}$

Simplification

x - 2 =± $\sqrt{\frac{3}{2}} i$

x₁ = 2 + $\sqrt{\frac{3}{2}} i$

x₂ = 2 - $\sqrt{\frac{3}{2}}$

6 0

3 years ago

During the revising stage in the writing process, the author _____.

nirvana33 [79]

During the revising stage in the writing process, the author corrects major errors and improves the work’s content.

8 0

3 years ago

Read 2 more answers

PLZ HELP RN ILL MARK YOU BRAINLIST IF ITS RIGHT PLZZZ IM DESPERATE

Fiesta28 [93]

Answer:

x = 24

Step-by-step explanation:

What I would do is use inverse operation. First do -8 x -3 = 24. Then check your work by doing 24 divided by -3 = -8. So x = 24. I am 100% sure this is correct

Pls mark me brainliest

6 0

3 years ago