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marissa [1.9K]
3 years ago
15

Four-fifths of a number decreased by eight is four. Find the number.

Mathematics
2 answers:
Norma-Jean [14]3 years ago
8 0
4/5x-8 = 4
4/5x = 12
X = 15
enyata [817]3 years ago
8 0

Answer:

5 tdosbfe

Step-by-step explanation:

kxx d id rwla d

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What is the value of the expression –5x4 when x = –2?
igomit [66]
It is definitely c, 80
4 0
3 years ago
Rex's puppy is 5 years younger than his other dog. If the other dog is x years old, what is an expression for the puppy's age?
HACTEHA [7]
The other dog's age is "x". Rex's puppy is 5 years less than "x". SO...
x-5.

Understand?
5 0
2 years ago
Read 2 more answers
A skate ramp is 4.2 meters long. It rises up 1.7 meters. What’s is the angle of elevation to the nearest tenth of a degree?
Kipish [7]
Θ
=
arcsin
(
.7
4.2
)
≈
10
∘
Explanation:
We view the ramp as a right triangle. The hypotenuse is 4.2 and the vertical side .7, which is opposite the angle
θ
we seek.
sin
θ
=
.7
4.2
=
1
6
I'm going to finish the problem but I'll note if we were actually building the ramp we don't need to know the angle; this sine is sufficient.
θ
=
arcsin
(
1
6
)
θ
≈
10
∘
which I think is a pretty steep ramp for a wheelchair.
There will be another inverse sine that is the supplementary angle, around
170
∘
, but we can rule that out as a value for a ramp wedge angle.
4 0
2 years ago
You work for a packaging company. The total weight of a container and its contents is 48 pounds. The contents of the container
choli [55]

Answer:

9/39

Step-by-step explanation: just took the quiz on ed 2020

7 0
3 years ago
Types of bonds are divided into three categories: good risk, medium risk, and poor risk. Assume that of a total of 11, 332 bonds
Alekssandra [29.7K]

Answer:

Probabilty of not poor= 0.75

Step-by-step explanation:

total of 11332 bonds.

7311 are good risk.

1182 are medium risk.

Poor risk

= total risk-(good risk+ medium risk)

= 11332-(7311+1182)

= 11332-8493

= 2839.

Poor risk = 2839

Probabilty that the ball choosen at random is not poor= 1 - probability that the ball is poor

Probability of poor = 2839/11332

Probabilty of poor= 0.2505

Probabilty that the ball choosen at random is not poor= 1- 0.2505

= 0.7495

To two decimal place= 0.75

3 0
3 years ago
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