3 years ago

21 is 7 Times as many as 3. What is the equation?

Mathematics

1 answer:

aalyn [17]3 years ago

5 0

21 = 7 x 3 or 7(3) if you're no longer using x as a multiplication symbol

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I need help with this one math question please!

den301095 [7]

Answer:

see explanation

Step-by-step explanation:

Assuming the fractions are being multiplied

Factorise the denominators of both fractions

x² - 3x - 10 = (x - 5)(x + 2)

x² + x - 12 = (x + 4)(x - 3)

The product can now be expressed as

$\frac{x-5}{(x-5)(x+2)}$ × $\frac{x+2}{(x+4)(x-3)}$

Cancel (x - 5) and (x + 2) on the numerators/ denominators, leaving

$\frac{1}{(x+4)(x-3)}$ = $\frac{1}{x^2+x-12}$

3 0

2 years ago

Find the arc length of the partial circle.

ElenaW [278]

Answer:

38.485(correct to 5 significant figure)/ 12.25π

Step-by-step explanation:

$\pi(7 {}^{2} )( \frac{90degree}{360deree} )$

$= \pi(49)( \frac{1}{4} )$

=38.485(cor. to 5 sig.fig.)/ 12.25π

to find arc length of sector,we need to π(radius²)(sector's degree divided by 360 degree)

8 0

2 years ago

I need help with this someone please

Alex

3/1 is your slope for that

7 0

2 years ago

Find the slope line (-2 -1) and (-4 -7)

Alenkinab [10]

Answer:

$m=3$

Step-by-step explanation:

Slope formula

$m=\frac{y_2-y_1}{x_2-x_1}$

Here

$(x_1, y_1) = (-2, -1) \ \ and \ \ (x_2, y_2) = (-4, -7)$

Slope can be calculated as

$m=\frac{-7-(-1)}{-4-(-2)}$

$m= \frac{-6}{-2} \\m=3$

7 0

2 years ago

The base of a prism has a perimeter of 12 centimeters and a height of 2 centimeters. The area of its base is 5 square centimeter

Lady_Fox [76]

Answer:so multiply 12*2=24 and 24*5=120 Is your answer .

Step-by-step explanation:

8 0

2 years ago