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Lisa [10]
3 years ago
15

Which equation has x=4 as the solution

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
5 0
(1) step by step below

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Prove the identity.<br> TT<br> sin x +<br> 2.<br> cotx<br> sin (-x)
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Hi... Do this for prove that

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Which value is the solution to the equation -8 = 6 - 7x? <br>A. -7 <br>B. - 2 <br>C. 2 <br>D. 5​
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PLZ HELP SCALE FACTOR TRIANGLE<br><br> A. 10.5 cm<br> B. 31.5 cm<br> C. 63 cm<br> D. 189 cm
Anarel [89]

If two similar triangles have sides in the ratio a : b, then their areas are in the ratio a² : b².

We have the ratio:

54:18=\dfrac{54}{18}=3:1

Area of the smaler triangle = x

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Therefore we have the equation:

567:x=3^2:1^2\\\\\dfrac{567}{x}=\dfrac{9}{1}\qquad|\text{cross multiply}\\\\9x=567\qquad|\text{divide both sides by 9}\\\\x=63

<h3>Answer: C. 63 cm²</h3>
3 0
3 years ago
How to solve by completing the square: -X2 +1190X-3200
Vlad [161]

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x2+6512

Step-by-step explanation:

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4 years ago
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A researcher thinks that a person's mood has an effect on how helpful that person is likely to be. To test this, the researcher
eimsori [14]

Answer:

One possible confound for the experiment is the attitude of the research assistants.

Step-by-step explanation:

A confounder simply means a variable that has impact in influencing both the dependent variable and independent variable, causing a spurious association.

So, we can conclude that the attitudes of the research assistants have positive and negative impacts in determining the reactions of both participants in the experiment.

The rudeness of a research assistant will negatively impact the response of the participant allocated to him/her.

The calmness of the other research assistant will positively impact the response of the participant allocated to him/her.

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