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BaLLatris [955]

2 years ago

13

A chemist has 5 1/10 kg of calcium chloride. If she uses 0.15 kg of the compound each time she performs and experiment, for how

many experiments will her supply last?

1 answer:

Licemer1 [7]2 years ago

7 0

Answer:

5 1/10 ÷ .15 is 34 so she will be able to perform 34 experiments

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Determine the range of the following graph:

Allushta [10]

Answer:

Determine the range of the following graph:

12

11

O

10

9

8

7

6

5

NA

Step-by-step explanation:

(f+g)(x)

f(x)= x-3, g(x)= 2x+8

8 0

2 years ago

Sergey is solving 5x2 + 20% – 7 = 0. Which steps could he use to solve the quadratic equation by completing the

Mrac [35]

Answer:

$5(x^2+4x)=7$

$5(x^2+4x+4)=7+20$

$(x+2)=\pm\sqrt{\frac{27}{5}}$

Step-by-step explanation:

we have

$5x^2+20x-7=0$

step 1

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$5x^2+20x=7$

step 2

Factor 5 left side

$5(x^2+4x)=7$

step 3

Complete the square

$5(x^2+4x+2^2)=7+2^2(5)$

$5(x^2+4x+4)=7+20$

$5(x^2+4x+4)=27$

step 4

Rewrite as perfect squares

$5(x+2)^2=27$

step 5

$(x+2)^2=\frac{27}{5}$

$(x+2)=\pm\sqrt{\frac{27}{5}}$

$(x+2)=\pm\frac{3\sqrt{15}}{5}$

step 6

$x=-2\pm\frac{3\sqrt{15}}{5}$

6 0

3 years ago

Read 2 more answers

PLEASE HELP 25 POINTS!!!

miss Akunina [59]

Sequence: 2 + 1 + 1/2 + 1/4 + 1/8 + ...

Explanation:

Here Given Sum to Infinity

$\sf S \infty \ =a_1 \ x \ \dfrac{1}{1-r}$

Identify following

a1 = 2

r = 1/2

Solve:

$\rightarrow \sf S \infty \ =2 \ x \ \dfrac{1}{1-\frac{1}{2} }$

$\rightarrow \sf S \infty \ =4$

The sum of this infinity series is 4

5 0

1 year ago

May I get some help please?

Assoli18 [71]

It would be (1,2) if your needing it to be in QI

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3 years ago

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Alexxx [7]

Nothing u cant do anything with a plumbing contract

5 0

2 years ago