3 years ago

Solve equation by completing the square 5n^2-3n-10=15

Mathematics

1 answer:

VARVARA [1.3K]3 years ago

5 0

These are the two answers you could get

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Which function represents the number of cars sold in terms of bonus received

Mice21 [21]

Answer:

1st option

Step-by-step explanation:

Just did it

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3 years ago

A straight line passing through A(3,2) and B(5,y) has gradient -2. find the value of y

astraxan [27]

Step-by-step explanation:

$gradient \: = \: \frac{y2 - y1}{x2 - x1}$

y2 = y , x2 = 5

y1 = 2 , x1 = 3

$- 2 \: = \: \frac{y - 2}{5 - 3}$

-4 = y-2 ==> y = -2

7 0

3 years ago

Read 2 more answers

A cookie recipe calls for 1/3 of a cup of sugar and 1 1/2 cups of flour. What is the unit rate of flour to sugar for the cookie

Serggg [28]

Answer:

Rate = 4.5

Step-by-step explanation:

It is given that,

A cookie recipe calls for 1/3 of a cup of sugar and 1 1/2 cups of flour.

We need to find the unit rate of flour to sugar for the cookie recipe. It can be calculated as follows :

$U=\dfrac{\text{No of cups of flour}}{\text{No of cups of sugar}}\\\\=\dfrac{1\dfrac{1}{2}}{\dfrac{1}{3}}\\\\=\dfrac{\dfrac{3}{2}}{\dfrac{1}{3}}\\\\=\dfrac{3}{2}\times 3\\\\=4.5$

So, the unit rate of flour to sugar for the cookie recipe is 4.5

6 0

3 years ago

18. What is the y-intercept of the line that passes<br> through the points (1, 1) and (5, 13)?

TEA [102]

Answer:

-2

(The coordinate point is (0,-2))

Step-by-step explanation:

First, make an equation of the line.

Start off with finding the slope:

Slope = (13-1)/(5-1) = 12/4 = 3

Then solve for the y-intercept though substitution and simplification:

y=mx+b --> 1=3(1)+b --> 1=3+b --> b= -2

So the answer is -2.

4 0

3 years ago

a square swimming pool has a cement sidewalk around it. The sidewalk is the same width all the way around. The outside perimeter

VLD [36.1K]

Answer:

175 square feet

Step-by-step explanation:

the area of the whole thing is 400 ft. (20 x 20=400)

i got the 20 from the perimeter b/c 20+20+20+20=80

then subtract the area of the pool from 400 to get 175.

6 0

3 years ago