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4 years ago

ASAP PLEASE HELP AND EXPLAIN TOO!!!!!!

Mathematics

1 answer:

VARVARA [1.3K]4 years ago

6 0

Looking at number 4, you first have to look at the information that you have:
On tuesday he practiced for 1 5/6 hrs
Monday he practiced for 7/10 hrs
He is supposed to practice for 1 1/4 hr.
You could write questions like:
How much more did Marco practice on Tuesday than he is supposed to practice?
This works because it does indeed involve subtraction, you would be subtracting the amount that he should have practiced from the amount of time that he did practice.
If I didn't answer the question, please message me and I will clarify!

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Using the elimination method, what is x and y ( please explain, I am still slightly confused)

Blizzard [7]

Answer:

(- 4, 1 )

Step-by-step explanation:

Given the 2 equations

x + 3y = - 1 → (1)

- 2x - 3y = 5 → (2)

Adding the 2 equations term by term will eliminate the y- term

- x + 0 = 4

- x = 4 ( multiply both sides by - 1 )

x = - 4

Substitute x = - 4 into either of the 2 equations and solve for y

Substituting into (1)

- 4 + 3y = - 1 ( add 4 to both sides )

3y = 3 ( divide both sides by 3 )

y = 1

solution is (- 4, 1 )

7 0

3 years ago

Three of the angles of a quadrilateral are 53°, 127° and 72°. What is the size of the 4th angle?

EleoNora [17]

The size of the fourth angel = 360 - ( 53 + 127 + 72 ) = 108

4 0

4 years ago

Alexis is knitting a blanket 2 meters long. Every 2 decimeters, she changes the color of the yarn to make stripes. How many stri

IgorC [24]

Answer:

There are 10 stripes in the blanket.

Step-by-step explanation:

We are given the following in the question:

Length of blanket = 2 meters

1 meter = 10 decimeter

Length of blanket in decimeter =

$2\times 10 = 20\text{ decimeters}$

Change of color = Every 2 decimeters.

Number of stripe =

$=\dfrac{\text{Length of blanket}}{\text{Length of change of color of stripe}}\\\\=\dfrac{20}{2} = 10$

Thus, there are 10 stripes in the blanket.

3 0

4 years ago

To win the annual Read A Thon at his school Sebastian has to read more books than any of his classmates over winter break he sta

Mazyrski [523]

The number of sports books is 13 books.

<h3>What is an equation?</h3>

A mathematical equation is the representation of a problem by the use of variables. Often times, an equation is formed from the factors that are in a problem.

We have to represented each of the books read with an algebraic term;

Let the number of mystery books be y

Let the number of sports books be x

Total number of books = 23

We know that;

x + y = 23

but y = 10

x = 23 - 10

x = 13 books

Learn more about algebra:brainly.com/question/24875240

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5 0

2 years ago

Which statement correctly compares the function shown on this graph with the function y = -x+ 4?

s344n2d4d5 [400]

Answer:

I think the answer for this question is C

6 0

3 years ago

Read 2 more answers