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Alchen [17]
3 years ago
13

Solve x2+x-1=0 using the quadratic formula.

Mathematics
1 answer:
weeeeeb [17]3 years ago
6 0

Answer:

x = \frac{-1 ±\sqrt{5} }{2}

Step-by-step explanation:

Ignore the A that doesn't belong in the answer

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Chris and Ben walked home from school. The distance Chris walked,in miles, is represented by point C on the number line. Ben wal
Xelga [282]

first you divide the amount of miles chris walked with 1/4 or .25 miles then you will get the answer

3 0
3 years ago
Find the percent of increase from 40 gallons to 89 gallons. Round to the nearest tenth of a percent if necessary.
fredd [130]

Solution

- 89 gallons contains 40 gallons twice such that:

89=40+40+9

- This means that we can find at least 200% of 40 gallons in 89 gallons. This gives us what to expect.

- To get the percentage we are looking for, we should use the formula:

\frac{\text{new}}{\text{old}}\times100\text{ \%}

New, in this case, is 89 gallons, Old is 40 gallons.

- Thus, we can calculate the percentage as follows:

\begin{gathered} \frac{89}{40}\times100 \\ =2.225\times100 \\ =222.5\text{ \%} \end{gathered}

Thus, the answer is 222.5%

8 0
7 months ago
Type your answers into the boxes.
egoroff_w [7]

Answer:

Step-by-step explanation:

√121 = 11

√900 = √30^2 = 30

∛125 = ∛5^3 = 5

∛729 = ∛9^3 = 9

6 0
3 years ago
PLSSS? i dont really get it<br> Thanks
solmaris [256]

Answer:

A) 83 km/ hour

B) 2/7 penalties / game

C) $16 / CD

D) 9 donuts / box

Step-by-step explanation:

A)

For this question they are asking for the distance traveled in 1 hour.

Since 747km was travelled in 9 hours, we divide 747 by 9 to find the distance travelled in 1 hour

747 ÷ 9 = 83

The unit rate is 83 km/ hour

B)

You have to find the number of penalties per game

Like before divide 10 by 35:

10 ÷ 35 = 10/35 = 2/7

2/7 penalties / game

C)

Find the cost of 1 CD :

64 / 4 = 16

$16 / CD

D)

Find the amount of donuts per box:

72/8 = 9

9 donuts per box

-Chetan K

3 0
2 years ago
Read 2 more answers
What is the answer ?
eduard

Answer:

926

Step-by-step explanation:

920 - 444 = x - 450

476 = x - 450

x= 476 + 450 = 926

x = 926

7 0
2 years ago
Read 2 more answers
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