All categories

3 years ago

Solve the equation x+0.7=1-0.2x in two different ways.Then check your answer.

Mathematics

1 answer:

Reptile [31]3 years ago

4 0

I hope this helps you

x+0,2x=1-0,7

1,2x=0,3

x=0,3/1,2

x=1/4

x=0,25

You might be interested in

Which situation represents a proportional relationship?

Natalka [10]

Answer:

B) Jack biked 5 miles in 25 minutes and 8 miles in 40 minutes.

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y=kx$

The ratio between the two variables is a constant called constant of proportionality k

$k=y/x$

<u><em>Verify each case</em></u>

A) Julie sold 4 necklaces for $12 and 9 necklaces for $25.

$\frac{4}{12}=\frac{9}{25}$

Multiply in cross

$4(25)=9(12)\\100\neq108$

Is not true

therefore

The situation not represent a proportional relationship

B) Jack biked 5 miles in 25 minutes and 8 miles in 40 minutes.

$\frac{5}{25}=\frac{8}{40}$

Multiply in cross

$5(40)=8(25)\\200=200$

Is true

therefore

The situation represent a proportional relationship

C) Larry packed 24 apples in 6 boxes and 46 apples in 9 boxes

$\frac{24}{6}=\frac{46}{9}$

Multiply in cross

$24(9)=46(6)\\216\neq276$

Is not true

therefore

The situation not represent a proportional relationship

D) Allie put 14 pieces of candy in 2 bags and 30 pieces of candy in 4 bags

$\frac{14}{2}=\frac{30}{4}$

Multiply in cross

$14(4)=30(2)\\56\neq60$

Is not true

therefore

The situation not represent a proportional relationship

7 0

4 years ago

The number of frogs on the pond is Proportional to the number of salamanders placed in the pond. Suppose there are 10 Frog’s for

bonufazy [111]

Answer:

Y=10x

(multiply 10 times the salamanders)

Step-by-step explanation:

a formula that can be used for this circumstance is a linear y=mx+b problem. for 1 salamander there are 10 frogs. so with this we can state that y=10x. whatever you plug into the x for the number of salamanders will give you the answer of how many frogs are in the pond. for example.

Y=10x

Y=10(3)

Y=30

30 frogs.

also because 10 is a nice number you can just multiply the number of salamanders times 10. 3*10=30

4 0

3 years ago

Please help me with this question. Urgent

Mumz [18]

Answer: I am not that sure but I think it’s first third and fifth

Step-by-step explanation:

8 0

3 years ago

A conjecture and the two-column proof used to prove the conjecture are shown.

Ahat [919]

Answer:

Just took the quiz hopefully this helps!

Step-by-step explanation:

4 0

3 years ago

Sedaia [141]

Answer: 2. a colorful fusion of Arab and Christian customs, art, and religious practices.

Step-by-step explanation:

My history teacher mentioned this in class.

6 0

3 years ago