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2 years ago

The sum of 3/4 and 18/19

Mathematics

2 answers:

Nady [450]2 years ago

6 0

The answer to your question is 1 3/4 or 1.75

SIZIF [17.4K]2 years ago

4 0

The answer to this question is 2.

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1)A student earned a grade of 80% on a math test that had 60 problems. How many

FrozenT [24]

Answer:

Step-by-step explanation:

80% = .8

60 x .8 = 48

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2 years ago

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willie buys a hot rod magazine for $7 and intends to stock up on pork rinds at 2$ a bag. he bought $15 write and inequality that

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7 months ago

the volume of a triangular prism is 42 cubic centimeters. what is the volume of a similar prism that is twice as large as large

Dmitriy789 [7]

Answer:

The volume of the similar prism is $336\ cm^{3}$

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z-----> the scale factor

x----> the volume of the larger prism

y----> the volume of the smaller prism

$z^{3}=\frac{x}{y}$

In this problem we have

$z=2$ -----> the scale factor

$y=42\ cm^{3}$

substitute and solve for x

$x=42(2^{3})=336\ cm^{3}$

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2 years ago

Write and equati9n of a l8ne that passes through (1,-2) and is perpendicular to -4x+7y=21

yarga [219]

Given:

A line passes through (1,-2) and is perpendicular to $-4x+7y=21$ .

To find:

The equation of that line.

Solution:

We have, equation of perpendicular line.

$-4x+7y=21$

Slope of this line is

$m_1=-\dfrac{\text{Coefficient of x}}{\text{Coefficient of y}}$

$m_1=-\dfrac{-4}{7}$

$m_1=\dfrac{4}{7}$

Product of slope of two perpendicular lines is -1.

$m_1\times m_2=-1$

$\dfrac{4}{7}\times m_2=-1$

$m_2=-\dfrac{7}{4}$

Now, slope of required line is $-\dfrac{7}{4}$ and it passes through (1,-2). So, the equation of line is

$y-y_1=m(x-x_1)$

where, m is slope.

$y-(-2)=-\dfrac{7}{4}(x-1)$

$4(y+2)=-7(x-1)$

$4y+8=-7x+7$

$4y+7x=7-8$

$7x+4y=-1$

Therefore, the equation of required line is $7x+4y=-1$ .

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2 years ago

Use the graph below to find the coordinates of J'after J(-5, 1) was reflected over the linex=-3.

k0ka [10]

Answer:

J's would be (-5,-4) if J was reflected over the line x=3.

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3 years ago