3 years ago

PLEASE HELP ME!! THIS IS 7TH GRADE MATH SO IT SHOULDN’T BE TOO HARD AHHAHA:)

Mathematics

1 answer:

Kryger [21]3 years ago

7 0

We need to see the graph in order to solve this problem

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What is 2 multiplying by 10

notsponge [240]

The answer is 20 because any number multiplied by 10 is going to be the same number but with a zero to the right of it for example 20 times 10 is 200 because u just add the zero to the right of the number have a great day

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2 years ago

The density of a certain material is such that it weighs 5 ounces per fluid ounce of volume. Express this density in pounds per

pav-90 [236]

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Don't lisen to that the anwer is 0.3125

Step-by-step explanation:

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3 years ago

Name the angle pair of angles 1 and 2.

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3 years ago

What are the roots of the quadratic equation below?<br> x2 + 2x= -5

muminat

Answer:

No real root.

Complex roots:

$x = -1 \pm 2i$

Step-by-step explanation:

$x^2 + 2x = -5$

$x^2 + 2x + 5 = 0$

There are no two integers whose product is 5 and whose sum is 2, so this trinomial is not factorable. We can use the quadratic formula.

$x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

$x = \dfrac{-2 \pm \sqrt{2^2 - 4(1)(5)}}{2(1)}$

$x = \dfrac{-2 \pm \sqrt{4 - 20}}{2}$

$x = \dfrac{-2 \pm \sqrt{-16}}{2}$

Since we have a square root of a negative number, there are no real roots. If you have learned complex numbers, then we can continue.

$x = \dfrac{-2 \pm 4i}{2}$

$x = -1 \pm 2i$

7 0

3 years ago

Read 2 more answers

Mrs.Middleton makes a solution to clean her windows. She uses a 2:1 ratio for cups of water to cups of vinegar. If Mrs.Middleton

Maru [420]

She will need 8 cups of vinegar.

Hope this helps!

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3 years ago