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3 years ago

Plz hurry

Mathematics

1 answer:

taurus [48]3 years ago

8 0

Answer: C

Step-by-step explanation: Reduce the expression, if possible, by cancelling the common factors.

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in a school 60% of the total number of student are boys. if the number of girl is 500, how many student are there in the class

Andreas93 [3]

Answer:

x=1250 students

Step-by-step explanation:

x= total amount of students

boys=60% of x

so left is 40% of girls given number is 500

so x=total number of boys+girls

X = (60/100)*X+500

X - (60/100)*X = 500

(40/100)*X = 500

X = (500*100)/40

x=1,250 students

7 0

3 years ago

This table contains equivalent ratics between x and y.

nikitadnepr [17]

Answer:

x y

2 8

3 12

5 60

7 28

Step-by-step explanation:

5 x 12 = 60

3 0

3 years ago

What does this equal

Inessa [10]

Answer:

Step-by-step explanation:

You must divide the diameter of Mars by the diameter of softball.

$(7\times10^7):(0.098)=\dfrac{7\times10^7}{0.098}=\dfrac{7\times10^7:7}{0.098:7}=\dfrac{10^7}{0.014}\\\\=\dfrac{10^7}{\frac{14}{1000}}=10^7\times\dfrac{1000}{14}=\dfrac{10^7\times10^3}{14}=\dfrac{10^{7+3}}{14}=\dfrac{1}{14}\times10^{10}\\\\\dfrac{1}{14}\approx0.071\to\dfrac{1}{14}\times10^{10}\approx0.071\times10^{10}=0.071\times10^2\times10^8\\\\=7.1\times10^8\\\\\text{Used}\ a^n\times a^m=a^{n+m}$

4 0

3 years ago

What is the probability

vovikov84 [41]

Current price is $14.98.

$14.98/.50 = $29.96. This was the price after the 20% mark down. Now calculate the original as follows:

$29.96/.80 = $37.45. This is the original price before all the discounts.

8 0

3 years ago

What is the equation of the line that passes through point (4,12) and has a y-intercept of -2?

Georgia [21]

Option B:

The equation of a line is $y=\frac{7}{2}x-2$ .

Solution:

Given data:

Line passing through the point (4, 12).

y-intercept of the line = –2

The equation of a line in slope-intercept form is

y = mx + c

where m is the slope and c is the y-intercept.

c = –2

Substitute c = –2 in slope-intercept form.

y = mx – 2 – – – – (1)

To find m, substitute (4, 12) in the above equation.

12 = m(4) – 2

12 = 4m – 2

Add 2 on both sides of the equation.

14 = 4m

Divide by 2 on both sides of the equation.

$$\frac{14}{4}=m$

$$\frac{7}{2}=m$

Slope = $\frac{7}{2}$

Substitute m value in equation (1), we get

$$y=\frac{7}{2}x-2$

The equation of a line is $y=\frac{7}{2}x-2$ .

Hence Option B is the correct answer.

8 0

3 years ago