All categories

3 years ago

2. Which variable expression represents the phrase "Twice the sum of a number and seven"

Mathematics

1 answer:

zalisa [80]3 years ago

7 0

Answer:

(n+7)x2

Step-by-step explanation:

You might be interested in

What is the perimeter of the figure shown above?<br> a. 17 cm<br> C. 15 cm<br> b. 21 cm<br> d. 19 cm

kobusy [5.1K]

Answer:

21cm

Step-by-step explanation:

Add everything together,

The top one is 5cm because of the bottom measurement is the same length

4 0

3 years ago

What is 1 2/3 to the 3rd power

hammer [34]

Answer:

$2\frac{7}{9}$

Step-by-step explanation:

In order to get the answer to this question you must change the mixed number into a improper fraction then multiply the improper fraction as many times as it's exponent.

$1\frac{2}{3} ^3$

Turn the mixed number into a improper fraction:

$1\frac{2}{3} =\frac{5}{3}$

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

$\frac{5}{3} ^3=\frac{5}{3} \times\frac{5}{3} \times\frac{5}{3}$

Now multiply:

$\frac{5}{3} \times\frac{5}{3} =\frac{25}{9}$

$\frac{25}{9} \times\frac{5}{3} =\frac{75}{27}$

Turn the improper fraction into a mixed number:

$\frac{75}{27} =2\frac{7}{9}$

$=2\frac{7}{9}$

Hope this helps.

5 0

4 years ago

Please help!! Will give Brainliest

ratelena [41]

Answer:

86 square inches

86 in^2

Step-by-step explanation:

Base: 3 × 10 = 30

Rectangle Sides: 2.5 × 10 = 25 (×2 = 50)

Triangle Sides: 2 × 3 = 6 (÷2 ×2 = 6)

Add: 30 + 50 + 6 = 86

4 0

3 years ago

Read 2 more answers

Help! Hurry! NO SPAM!!!! I will mark brainliest if you get it correct, and show your work. Identify the equation for the circle

kotegsom [21]

First we compute the distance between the center and the given point which is exactly the radius

r =

$\sqrt{(x2 - x1) + (y2 - y1)} = \sqrt{9 - 3 + 11 - 7} = \sqrt{10}$

Now that we know the center and the radius, we can write the equation of a circle with given radius and center:

${(x - h)}^{2} + {(y - k)}^{2} = {r}^{2}$

where (h,k) represent the coordinates of the center (3,7).

We substitute and obtain

${(x - 3)}^{2} + {(y - 7)}^{2} = { \sqrt{10} }^{2} \\ {(x - 3)}^{2} + {(y - 7)}^{2} = 10 \\ {x}^{2} - 6x + 9 + {y}^{2} - 14y + 49 = 10 \\ {x}^{2} + {y}^{2} - 6x - 14y + 48 = 0$

4 0

3 years ago

A bakery has 49 donuts and 28 muffins for sale. What is the ratio of muffins to donuts? Please answer ASAP 99 Points :V

Alik [6]

Hey there! :D

In a ratio, the first thing or item mentioned is first in the ratio. Let the muffins stand for x, and the donuts stand for y. It asks for the ratio of muffins to donuts.

x:y

Plug in the numbers.

28:49

Both numbers are divisible by 7.

28/7= 4 49/7=7

4:7 <=== simplified ratio

I hope this helps!
~kaikers

8 0

3 years ago

Read 2 more answers