3 years ago

What are the solutions of the equation? x² – 21 = –4x

Mathematics

2 answers:

Effectus [21]3 years ago

6 0

Here are two solutions for x2-4x-21=0

x = 7
x = -3

antiseptic1488 [7]3 years ago

5 0

x = 7
x = -3
i used a caluclator im not to good at this either but i hope this helps

You might be interested in

How much fibre does the NHS recommend adults take in as a daily dose?

iVinArrow [24]

Answer:

The answer is D: 30 g.

Step-by-step explanation: I googled the answer to this question and it said that NHS reccomends that adults take around 30 g of fibre as a daily dose. If you take less, you may not get enough, but if you take more, you would possibly overdose. So, the answer is D: 30g.

8 0

3 years ago

What is the answer 2( 4.8j + 4.57 ) ≤ - 19.06 – 18.6j

vesna_86 [32]

Answer:

j $\leq$ -1

Step-by-step explanation:

7 0

3 years ago

The television show 50 Minutes has been successful for many years. That show recently had a share of 15, which means, that among

Lapatulllka [165]

Answer- b

Step-by-step explanation:

its b

4 0

3 years ago

Rewrite the fraction in the sentence below as a percentage.

Furkat [3]

Answer:

55%

Step-by-step explanation:

Total number of targets = 20

Number of targets hit = 11

100 / 20 = 5

5 * 11 = 55

This means that 55% of the targets were hit.

6 0

3 years ago

Sharon is making a large batch of soup. The soup reaches a height of 25 in a cylindrical pot whose diameter is 30cm. To store th

eduard

Answer:

Step-by-step explanation:

Well we first need to find the volume of the soup in the pot using the following formula,

πr^2h

15*15 = 225

225 * 25 = 5625

5625 * pi = 17671.46

Now we need to find the volume of the ice cube using the formula,

l*w*h

7*7*7 = 343

Now we do 17671.46 ÷ 343 = 51.5202915452

You can have half an ice cube,

thus, Sharon can make 51 whole cubes.

Hope this helps :)

5 0

3 years ago

Read 2 more answers