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4 years ago

Translate the sentence into an equation. Four more than a number is 12.

Mathematics

2 answers:

Lapatulllka [165]4 years ago

5 0

More than means addition
lets call our number 'x'
is means the equal sign

so we would get

x + 4 = 12
D

I am Lyosha [343]4 years ago

5 0

$x+4=12$
..............

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How many 1/4s are in 1 1/2

Levart [38]

6 maybe? I used Siri sorry if it’s wrong

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3 years ago

N = 20

lesantik [10]

Answer:

A. 30.144

Step-by-step explanation:

This is a Chi-Squared test

Given:

$n=20$
$s=18$
$\textsf{H}_0:\sigma^2=384$
$\textsf{H}_1:\sigma^2 > 384$
The significance level is 5%, so $\alpha= 0.05$

To use the Chi-Square distribution table, you need to know two values:

Degrees of freedom = (n - 1)
Significance level

Degrees of Freedom = n - 1 = 20 - 1 = 19

The significance level is 5%, so $\alpha= 0.05$

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7 0

2 years ago

What is the equation of the line that is parallel to 3x-5y=7 and passes through the point (-10,8)

Goryan [66]

Answer:

$5y - 3x = 70$

Step-by-step explanation:

The given line has equation:

3x-5y=7

We need to determine the slope of this line, so we rewrite in slope intercept form.

$y = \frac{3}{5}x - \frac{7}{5}$

The slope of this line , when we compare to y=mx+c is

$m = \frac{3}{5}$

All parallel lines have the same slope.

Hence our line also has the same slope

This line passes through (-10,8).

The equation is given by:

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

We substitute the slope and point to get:

$y - 8 = \frac{3}{5}(x - - 10)$

We expand to get:

$y - 8 = \frac{3}{5}x + 6$

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3 years ago

8. Which statement is always true?

Anit [1.1K]

Answer:

Step-by-step explanation:

Any number multiplied by an even number will always be even. 10 is an even number.

4 0

3 years ago

Read 2 more answers

Work out the area of a semi circle with a radius of 3cm give your answer in terms of pi

Ivenika [448]

<h3>The area of semicircle is $4.5 \pi\ cm^2$ </h3>

Solution:

Given that,

We have to find the area of a semi circle with a radius of 3 cm

The area of semicircle is given as:

$Area\ of\ semicircle = \frac{ \pi r^2}{2}$

Where, r is the radius

From given,

r = 3 cm

Substituting the values we get,

$Area\ of\ semicircle = \frac{ \pi \times 3^2}{2}\\\\Area\ of\ semicircle = \frac{ \pi \times 9}{2}\\\\Area\ of\ semicircle = 4.5 \pi$

Thus the area of semicircle is $4.5 \pi\ cm^2$

4 0

4 years ago