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ale4655 [162]
3 years ago
6

Solve the equation x2 + 5 = 0

Mathematics
2 answers:
ivolga24 [154]3 years ago
7 0
Take the root of both sides and solve for x

x=i√5,−i√5
scZoUnD [109]3 years ago
6 0
Here’s the answer hope it helps

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Casey has 281 tennis balls. She will put them in containers that hold 3 tennis balls. About how many containers will Casey use?
lisov135 [29]

Answer:

90

Step-by-step explanation:

If we have total around 281 items, and we can divide them into groups of 3.

We can make around 281/3 groups which is about 90

3 0
3 years ago
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(05.02 MC) A system of equations is shown below: 4x = −3y + 17 3x − 4y = −6 What is the solution to this system of equations? (−
aliina [53]
4x=-3y+17 becomes 4x+3y=17

4x+3y=17
3x-4y=-6

alrighty

elimination

muliply first equation by 4 and 2nd by 3 and add them
16x+12y=68
9x-12y=-18
add them

25x+0y=50
25x=50
idivide both sides by 25
x=2

sub back

3x-4y=-6
3(2)-4y=-6
6-4y=-6
-4y=-12
y=3

(x,y)
(2,3)
5 0
3 years ago
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The model of a trinomial is shown. An algebra tile configuration. 0 tiles are in the Factor 1 spot and 0 tiles are in the Factor
Snezhnost [94]

Answer:

C. x – 7

E. x + 2

Step-by-step explanation:

8 0
3 years ago
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The function f(x) = 300(0.5)x/100 models the amount in pounds of a particular radioactive material stored in a concrete vault, w
allsm [11]

The amount of the radioactive material in the vault after 140 years is 210 pounds

<h3>How to determine the amount</h3>

We have that the function is given as a model;

f(x) = 300(0.5)x/100

Where

  • x = number of years of the vault = 140 years
  • f(x) is the amount  in pounds

Let's substitute the value of 'x' in the model

f(x) = 300(0.5)x/100

f(x) = \frac{300(0.5) * 140}{100}

f(x) =\frac{21000}{100}

f(140) = 210 pounds

This mean that the function of 149 years would give an amount of 210 pounds rounded up to the nearest whole number.

Thus, the amount of the radioactive material in the vault after 140 years is 210 pounds

Learn more amount radioactive decay here:

brainly.com/question/11117468

#SPJ1

5 0
2 years ago
Simplify the radical equation
Mumz [18]

radical

√7(√14 +3√7)

using distributive property,

√7√14 +3√7√7

we can write √14 as √2*√7,

√7√2√7 +3√7√7

√7(√14 +3√7)=7√2 +21

4 0
3 years ago
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