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3 years ago

Hey bro's help me!!

Mathematics

2 answers:

White raven [17]3 years ago

8 0

Answer:

-7 and 12 gl

Step-by-step explanation:

sweet [91]3 years ago

3 0

Answer:

1. -7

2. 12

Step-by-step explanation:

Hope this helps :)

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3x<br><img src="https://tex.z-dn.net/?f=3x%20%2B%202y%20%3D%201%20and%202x%20-%203y%20" id="TexFormula1" title="3x + 2y = 1 and

Bezzdna [24]

If you mean 12x by “1and2x”. it’s 9x - 5y = 0.

If it’s 1x and 2x it’s y= 2/5x^2 -3/5x, x

7 0

3 years ago

Suppose that administrators at a large urban high school want to gain a better understanding of the prevalence of bullying withi

RSB [31]

Answer: $(0.273,\ 0.783)$

Step-by-step explanation:

Given : Total number of students who are asked to complete a survey anonymously : n= 240

Number of students

The proportion report that they have experienced bullying =54

Then , the proportion that students have experienced bullying = $p=\dfrac{54}{240}=0.225$

Significance interval : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

The confidence interval for the true proportion is given by :-

$p\pm z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}\\\\=0.225\pm (1.96)\sqrt{\dfrac{(0.225)(1-0.225)}{240}}\\\\\approx0.225\pm0.0528\\\\=(0.255-0.528,\ 0.255+0.528)\\\\=(0.273,\ 0.783)$

8 0

3 years ago

Write an expression to represent:Nine less than the quotient of two and a number xxx.

Illusion [34]

Answer:

2/x - 9

Step-by-step explanation:

Hi there!

"9 less than" means we'll be subtracting 9 from our expression

"the quotient of 2 and a number x" means we'll be dividing 2 and x:

2/x - 9

I hope this helps!

3 0

3 years ago

One-fourth of r subtracted from ten is greater than five

rosijanka [135]

Im not 100% about how this question is explained or written but i think its 8

8 0

3 years ago

Read 2 more answers

HELP PLEASE! Will give the Brainliest if shown work!!

scZoUnD [109]

Answer:

$\large\boxed{Q1.\ A_{\triangle PQR}=90\ cm^2}\\\\\boxed{Q2.\ V\approx321\ m^3}$

Step-by-step explanation:

$Q1.\\\\\text{If}\ \triangle ABC\sim\triangle PQR\ \text{then the quotient of the areas is equal}\\\text{the square of the similarity scale}\ k.\\\\\text{The sides}\ AB\ \text{and}\ QP\ \text{are corresponding}.\ \text{Calculate the scale:}\\\\k=\dfrac{4}{6}=\dfrac{4:2}{6:2}=\dfrac{2}{3}\\\\\text{The area of }\ \triangle ABC=40\ cm^2.\\\\\text{Let the area of}\ \triangle PQR=x,\ \text{then}\\\\\dfrac{40}{x}=\left(\dfrac{2}{3}\right)^2\\\\\dfrac{40}{x}=\dfrac{4}{9}\qquad\text{cross multiply}\\\\4x=(9)(40)\qquad\text{divide both sides by 4}\\\\x=(9)(10)\\\\x=90\ cm^2$

$Q2.\\\\\text{The formula of a volume of a sphere:}\\\\V=\dfrac{4}{3}\pi R^3\\\\R-radius\\\\\text{We have the diameter}\ 2R=8.5\ m\to R=\dfrac{8.5}{2}\ m=4.25\ m.\\\\\text{Substitute:}\\\\V=\dfrac{4}{3}\pi(4.25)^3=\dfrac{4}{3}\pi(76.765625)=(4)(25.588541)\pi=102.354164\pi\\\\\pi\approx3.14\\\\V=(102.354164)(3.14)\approx321\ m^3$

8 0

3 years ago

Read 2 more answers

Hey bro's help me!!​

Hey bro's help me!!