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3 years ago

Find the value of 4.6 + 2.8

Mathematics

2 answers:

butalik [34]3 years ago

5 0

4.2+2.8=7.8 hope this helps

Ksivusya [100]3 years ago

3 0

Answer:

4.6+2.8 = 7.4

Step-by-step explanation:

Basically add 4 and 2 to get 6

Then add 0.6 and 0.8 to get 1.4

ADD....you get 7.4

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What is 6 times 3 over 8? How do you do it? In a fraction and simplified?

Mademuasel [1]

First do 6 times 3=18 then divide by 8 to get 2.25

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4 years ago

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Mrs. Holt writes the expression 6/4 + 5/8 . She ask her students to simplify the expression and write the answer as a percentage

Oksanka [162]

Answer:

I don't see the table, but if you do 6/4 + 5/8 = 12/8+5/8 = 17/8.

17/8 = 2.125 = 212.5%

Step-by-step explanation:

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3 years ago

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A trapezoid has sides of length 19 meters, 4.4 meters, 19 meters, and 17.2 meters. What is the perimeter?

Dafna11 [192]

19+19+4.4+17.2=59.6 is the perimeter

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4 years ago

If the discriminant of a quadratic equation is equal to -8, which statement describes the roots?

Dovator [93]

Keywords

quadratic equation, discriminant, complex roots, real roots

we know that

The formula to calculate the roots of the quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}}{2a}$

where

The discriminant of the quadratic equation is equal to

$b^{2}-4ac$

if $(b^{2}-4ac)> 0$ ----> the quadratic equation has two real roots

if $(b^{2}-4ac)=0$ ----> the quadratic equation has one real root

if $(b^{2}-4ac)< 0$ ----> the quadratic equation has two complex roots

in this problem we have that

the discriminant is equal to $-8$

the quadratic equation has two complex roots

therefore

the answer is the option A

There are two complex roots

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3 years ago

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Find the experimental probability that exactly 3 of 4

otez555 [7]

Answer:

4 / 20 (1 / 5)

20%

Step-by-step explanation:

The experimental probability is what actually happens in an experiment (as opposed to an authentic probability calculated from genetics).

In this experiment, there are 3 outcomes with :

3 tails and 1 head

(tails represent female, head represent male)

So, 4 / 20 of the time, this coin flip was what we call a "success" (meaning that it matches the guidelines that we want)

4 / 20 = 20% of the time

So, the probability of a group of 4 puppies being 3 females and 1 male is :

4 / 20 (1 / 5)

20%

3 0

2 years ago