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3 years ago

10

Can someone answer and explaine this to me

1 answer:

vampirchik [111]3 years ago

6 0

4x - 26 = 3x + 4
-3x -3x
x - 26 = 4
+26 +26
x = 30
Since the 2 angles are opposite of each other you would set them equal to each other.

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Which statement best describes the triangle formed by joining the points A(-3,6),B(-11,2),C(-4,-2)

Vikki [24]

Answer:

Isosceles triangle

Step-by-step explanation:

Length of side AB = $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

= $\sqrt{(-11+3)^2+(2-6)^2}$

= $\sqrt{64+16}$

= $\sqrt{80}$

= 4 $\sqrt{5}$

Length of BC = $\sqrt{(-4+11)^2+(-2-2)^2}$

= $\sqrt{49+16}$

= $\sqrt{65}$

Length of AC = $\sqrt{(-3+4)^2+(6+2)^2}$

= $\sqrt{1+64}$

= $\sqrt{65}$

Since, AC = BC, ΔABC will be an isosceles triangle.

6 0

3 years ago

Help with this question(Will give brianlist and thanks)(Determine the area)

lana [24]

Answer:

The area of trapezium is (x+11) cm².

Step-by-step explanation:

Given that the formula of area of trapezium is :

$area = \frac{1}{2} \times (a + b) \times h$

In the formula, a and b represents the length of trapezium and h is the height. So you have to substitute the following expressions into the formula :

$let \: a = 5 \\ let \: b = x + 6 \\ let \: h = 2$

$area = \frac{1}{2} \times (5 + x + 6) \times 2$

$area = \frac{1}{2} \times 2 \times (x + 11)$

$area = 1 \times (x + 11)$

$area = (x + 11) \: {cm}^{2}$

3 0

4 years ago

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Simplify 2(x-4)+7(x+4)

Irina-Kira [14]

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3 years ago

A medical researcher says that less than 87â€‹% of adults in a certain country think that healthy children should be required to

Lyrx [107]

Answer: It is not enough evidence to support the researcher's claim.

Step-by-step explanation:

Since we have given that

n = 500

$\hat{p}=0.85$

So, the hypothesis are as follows:

$H_0:\hat{p}$

So, the z value would be

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\z=\dfrac{0.85-0.87}{\sqrt{\dfrac{0.87\times 0.13}{500}}}\\\\z=\dfrac{-0.02}{0.015}\\\\z=-1.33$

At α = 0.05

z= -1.64

So, 1.64<-1.33

So, we accept the null hypothesis.

Hence, it is not enough evidence to support the researcher's claim.

3 0

3 years ago

What is 0.12¯¯¯¯ expressed as a fraction in simplest form? Enter your answer in the box.

Tatiana [17]

I just took the test i should be 4/33

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3 years ago

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