3 years ago

Which expression means “ multiply 3 by the sum of m and p “

Mathematics

1 answer:

JulijaS [17]3 years ago

6 0

The answer would be A. hope this helps

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Helllp me plzzzzzzzz i will mark brainlist

katen-ka-za [31]

Answer:

126

Step-by-step explanation:

set up a proportion, 59/140= x/300. Cross multiply: 140x= 17700. Then divide both sides by 140. the answer is 126.42857... ore rounded, 126.

7 0

3 years ago

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Roberto has run the first 16 miles of a race, which means he is 72% finished. How long is the race?

postnew [5]

Answer:

approximately 22.2 miles

Step-by-step explanation:

16mi/72% =xmi/100%

72x=1600

x=22.2222222.....

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3 years ago

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For which positive integer values of $k$ does $kx^2+20x+k=0$ have rational solutions? Express your answers separated by commas a

Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

$k {x}^{2} + 20x + k = 0$

The discriminant of this equation is given by;

$D = {b}^{2} - 4ac$

where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

${20}^{2} - 4 \times k \times k = 0$

Simplify to get:

$400 - 4 {k}^{2} = 0$

This implies that:

$400 = 4 {k}^{2}$

$100 = {k}^{2}$

Take square root to get:

$k = \pm\sqrt{100}$

$k = \pm10$

$k = - 10 \: or \: k = 10$

3 0

3 years ago

What is the surface area of the triangular prism?

Natalija [7]

Answer:

the answer is c

Step-by-step explanation:

7 0

3 years ago

24. Two trapezoids have areas of 432 cm and 48 cm. Find their ratio of similarity

ivann1987 [24]

Answer:

9:1

Step-by-step explanation:

432/48=9

9:1

7 0

2 years ago