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2 years ago

What is the value of x

Mathematics

1 answer:

geniusboy [140]2 years ago

6 0

Answer:

Step-by-step explanation:

3x+2

3(11)+2

33+2

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a student earned a grade of 80% on a math test that had 25 problems. how many problems on this test did the student answer corre

Mamont248 [21]

80% of 25
percent means parts out of 100
'of' means multiply
80% of 25 means
80/100 times 25=40/50 times 25=20/25 times 25=20

answer is 20 problems

6 0

2 years ago

Read 2 more answers

Write the equation of the line that is perpendicular to y=2x-7 and passes through the point (6, 5)

Pani-rosa [81]

Answer:

Step-by-step explanation:

we are given a equation of a line

we want to figure out the equation of the perpendicular line passes through the (6,5) points

in order to do so

recall that,

$\displaystyle m_{ \text{perpendicular}} = - \frac{1}{m}$

we got from our given equation that m=2

because equation of a line is y=mx+b

thus

$\displaystyle m_{ \text{perpendicular}} = - \frac{1}{2}$

remember that, when we want to figure out perpendicular line or parallel line we should the formula given by

$\displaystyle y - y_{1} = m(x - x_{1})$

since we got our perpendicular m is -½, $x_1=6$ and $y_1=5$ , substitute

$\displaystyle y - 5 = - \frac{1}{2} (x - 6)$

to get the perpendicular equation you should simplify the above equation to y=mx+b form

distribute -½:

$\displaystyle y - 5 = - \frac{1}{2} x + 3$

add 5 to both sides:

$\displaystyle y = - \frac{1}{2} x + 8$

hence,

our answer choice is B

3 0

3 years ago

Read 2 more answers

Solve the two-step equation. 14 = 31.7 – 3x What is the solution?

shtirl [24]

Answer:

The answer is 5.9

Step-by-step explanation:

1) Subtract 31.7 from both sides.

$14 - 31.7 = - 3x$

2) Simplify 14 - 31.7 to -17.7

$- 17.7 = - 3x$

3) Divide both sides by -3.

$\frac{ - 17.7}{ - 3} = x$

4) Simplify -17.7/-3 to 5.9

$5.9 = x$

5) Switch sides.

$x = 5.9$

Therefor, the answer is x = 5.9.

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2 years ago

You planted 488 acres of corn last season. You sold all your corn: 8,120 bushels in August and 46,100 bushels in September. What

strojnjashka [21]

Add August and September for total amount of bushels:

46,100 + 8,120 = 54,220 total bushels

Divide total bushels by total acres:

54,220 / 488 = 111.1 = 111 bushels per acre

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3 years ago

Solve 9c + 4 = -23 -3 3 -2,1 4

irga5000 [103]

9c + 4 = -23
9c = -27
c = -3

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2 years ago

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