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FinnZ [79.3K]
2 years ago
9

#5 Test question 7th grade math

Mathematics
1 answer:
katen-ka-za [31]2 years ago
8 0

Answer:

0.85p and p - 0.15p are right

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If the point (a,3) lies on the graph of the equation 5x + y = 8, then a=<br>a.01<br>b.0-1<br>c.0-7​
fomenos

Answer:

A (a = 1)

Step-by-step explanation:

A coordinate point is always in the form (x,y) that means the first point is always x-coordinate and the second point is always y-coordinate.

The equation given is:

5x + y = 8

The point is (a,3), so that means x = a and y = 3

We substitute the values into the equation and find a. Shown below:

5x + y = 8

5(a) + (3) = 8

5a + 3 = 8

5a = 8 - 3

5a = 5

a = 5/5

a = 1

Answer choice A is right

6 0
3 years ago
Given h(x) = 3x + 4, find h(-1).
larisa86 [58]
Plug in -1 for x
h(-1) = 3(-1) + 4
h(-1) = -3 + 4
Solution: h(-1) = 1
6 0
2 years ago
An amount of $ 8,000 was invested at 6% interest that is compounded yearly. The equation
sladkih [1.3K]

Answer:

The answer is 12000 roundes to the neatest thousand

Step-by-step explanation:

In your calculator just substitute 7 into t

8000 ×1.06 to the power of 7

8 0
2 years ago
Assume that the probability that a baseball player will get a hit in any one at bat is 0.250. What is the probability that he wi
Yanka [14]

Answer: 0.0791

Step-by-step explanation:

Given : The probability that a baseball player will get a hit in any one at bat is 0.250.

Let x be the first hit.

According to the geometric probability , the probability that x (th) trial is the first success =P(X=x)=(1-p)^{x-1}p , where p is the probability of getting success in each trial.

As per given p= 0.250

Then, the probability that he will get his first hit on his 5th at bat will be :

P(X=x)=(1-0.25)^{5-1}(0.25)\\\\=(0.75)^4(0.25)\\\\=0.0791015625\approx0.0791

Hence, the probability that he will get his first hit on his 5th at bat is 0.0791 .

7 0
2 years ago
Can someone help me please
Ghella [55]
X=-y+10/7y
Here’s a picture on how I solve and got my answer

7 0
3 years ago
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