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Phoenix [80]
4 years ago
7

A test has 20 questions how many do you need to answer correctly in order to get 4/5 of them right

Mathematics
2 answers:
Ket [755]4 years ago
7 0

4/5 x 20 = 16


Answer: 16 questions

lora16 [44]4 years ago
5 0

To figure out the question, we can do 20 multiplied by 4/5, aka 0.8, and we get 16 questions as our answer!

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Solve for x. 24 = − 3 8 x A) −56 B) −64 C) −72 D) −84
Crank

B -64

I got -6.4 which means its most likely -64

5 0
4 years ago
Read 2 more answers
Which of the following DOES NOT have any rectangular faces? A. pentagonal prism B. hexagonal pyramid C. rectangular prism D. squ
BaLLatris [955]

Answer:

Hexagonal pyramid DOES NOT have any rectangular faces

Step-by-step explanation:

Given some solids we have to choose that one which DOES NOT have any rectangular faces

Pentagonal prism has total 7 faces out of which two faces are pentagons and 5 are rectangular.

Hexagonal pyramid is a pyramid with a hexagonal base upon which are erected 6 isosceles triangular faces.

It has no rectangular face.

Rectangular prism is a solid with 6 rectangular faces also known as cuboid.

Square pyramid is a pyramid with 1 square base. As every square is a rectangle.

we can say 1 rectangular face.

Hence, Hexagonal pyramid DOES NOT have any rectangular faces.

Option B is correct.

6 0
4 years ago
Read 2 more answers
Give one example of when you would use the friendly numbers strategy to subtract
vagabundo [1.1K]
When there are one positive and one negative 
7 0
3 years ago
X^2+10x+19=0 complete the square PLEASE EXPLAIN
wlad13 [49]

Answer:

Step-by-step explanation

In the form ax^2+bx+c

a x c should equal two factors of b

However, in this equation

1 x 19 has no factors that = 10

so you must use the Quadratic Formula which is,

x = \frac{-b+-\sqrt{b^2-4ac} }{2a}

so the answer should be

x = \frac{-10+-\sqrt{10^2-4(1)(19)} }{2(1)}

x = \frac{-10+-\sqrt{24} }{2}

x = \frac{-10+2\sqrt{6} }{2}      and    x = \frac{-10-2\sqrt{6} }{2}

8 0
3 years ago
What are the solutions for the given equation?
joja [24]

Answer:

there arent

Step-by-step explanation:

Δ is negative

7 0
2 years ago
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