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3 years ago

I need help on 1 2 and 3...pls help me

Mathematics

2 answers:

dangina [55]3 years ago

7 0

1. 19
2. One person got 15 on both
3. Slightly higher scores on Quiz 1

Naily [24]3 years ago

5 0

1. 19

2. Yes. One student earned 20 on Quiz 1 and Quiz 2, and another got 15 on Quiz 1 and 15 on Quiz 2.

3. The Quiz 1 scores differentiate from the Quiz 2 scores slightly.

I hope that helped! c:

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If 5-3(2a+1)=-4a+10, what is the value of a+2

AlekseyPX

Answer:

-2

<em>BRAINLIEST, PLEASE!</em>

Step-by-step explanation:

5 - 3(2a + 1) = -4a + 10

5 - 6a - 3 = -4a + 10

2 - 6a = -4a + 10

-2a = 8

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3 years ago

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How much line of symmetry an square

zhenek [66]

4 because you can draw a line horizontally and a line vertically and also two lines diagonally.

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The area of the square is 100 square centimeters. What is the area of the circle?

swat32

Answer:

Since the question is incomplete, see the figure attached and the explanation below.

Explanation:

Since the figure is missing, I enclose the figure of a square inscribed in a circle.

Since the <em>area of a square</em> is the side length squared, you can determine the side length:

Area = (side length)²

100 cm² = (side lenght)²

$side\text{ }length=\sqrt{100cm^2}=10cm$

From the side length, you can find the diagonal of the square, which is equal to the diameter of the circle, using the Pythagorean theorem:

diagonal² = (10cm)² + (10cm)² = 2 × (10cm)²

$diagonal=\sqrt{2\times (10cm)^2}\\ \\ diagonal=10\sqrt{2} cm$

The area of the circle is π (radius)².

radius = diameter/2 = diagonal/2

$area= \pi \times (5\sqrt{2}cm)^2=50\pi cm^2$

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3 years ago

<img src="https://tex.z-dn.net/?f=f%28t%29%20%3D%202t%20-%203%20%5C%5C%20f%287%29" id="TexFormula1" title="f(t) = 2t - 3 \\ f(7)

Ostrovityanka [42]

Answer:11

Step-by-step explanation:

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3 years ago

Given cos x=0.4762,find the degree measure of x.round your answer to the nearest tenth

alex41 [277]

If you have a calculator, you can use the inverse cos " cos⁻¹ " key. Many upper level books write that as Arccos so as not to confuse you with a negative exponent. We do that because if you take the cosine of any angle, and then the inverse cosine of any angle, it leads you back to the original angle. Think of it as a big "UNDO" button.

To one decimal place, that result is 61.6 degrees.

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3 years ago