3 years ago

Which system of equations can be used to solve for j and w?

Mathematics

1 answer:

guajiro [1.7K]3 years ago

5 0

Answer:

option A

Hope this helps!

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You need 300 mL of a 65% alcohol solution. On hand, you have a 50% alcohol mixture. How much of the 50% alcohol mixture and pure

artcher [175]

Answer:

You will need 220 mL of the 60% solution and 80 mL of pure alcohol.

Step-by-step explanation:

Let 'x' be the amount of 50% alcohol solution and y the amount of pure alcohol.

Therefore:

(0.5x + y)/300 = 0.65 ⇒ 0.5x + y = 190

x + y = 300

Solving the sistem of equations:

x = 220 and y = 080

Therefore, You will need

220 mL of the 60% solution

and 80 mL of pure alcohol.

8 0

3 years ago

Look at the graph of the function y = 5x. Which statement is true?

choli [55]

You need to give us the answers..

7 0

4 years ago

Let h(x)=2x+5hand g(x)=8-3xg, What is the value of h(g(1.5)

Mekhanik [1.2K]

Hello,

Do you mean
h(x)=2x+5
g(x)=8-3x

h(g(x))=h(8-3x)=2(8-3x)+5=16-6x+5=21-6x

h(g(1.5))=h(g(3/2))=21-6*3/2=21-9=12

7 0

3 years ago

If marie wants to decorate a gift box with ribbon. She measures three pieces that she has with a ruler.They are 32. Centimeters,

Lady_Fox [76]

Answer: No, she does not have enough.

Step-by-step explanation:

1. You have the following information given in the problem above:

- The measures of the three pieces are: 32 centimeters, 41.19 centimeters and 57.8 centimeters long.

- She need 200 centimeters of ribbon for the box.

2. Therefore, you must add the measures given in the problem to know if Marie has enough ribbon to decorate the gift box. Then:

$32cm+41.19cm+57.8cm=130.99cm$

3. As you can see:

130.99 cm<200 cm

Therefore, she does not have enough ribbon.

6 0

3 years ago

A cheetah ran 196 meters in 8 seconds. Select the TWO correct statements that are true if the cheetah runs at a constant rate.

Nata [24]

Answer

. The cheetah ran 24.5 meters per second.

Step-by-step explanation:

Its that one because if you divide the meters by seconds which is 196/8 you would get 24.5 meters per second

6 0

3 years ago

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