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vlada-n [284]
4 years ago
15

You get scores of 85 and 91 on two history test.Wright and solve an inequality to find the scores you can get on your next histo

ry test to have an average of at least 90
Mathematics
1 answer:
Goryan [66]4 years ago
5 0
Let x = score on next test
(85+91+x)/3\geq90
x\geq94
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I'd really appreciate it if you'd show your work for the question, it'd be lots of help! I'll give Brainliest! :)
Sonbull [250]

Let the number of ride tickets = x tickets.

And the total cost is given by y.

Fair charges $1.25 per ticket for the rides.

Johnny bought = 25 tickets.

Therefore, cost of 25 tickets @ $1.25 per ticket = 25 × 1.25 = $31.25

Total amount spent at the fair = $43.75.

Fair admission charge = Total amount spent - Cost of 25 tickets = 43.75 - 31.25 =$12.50.

Therefore, total cost of the fair = Fix fair admission charge + total cost of x number of tickets @1.25 each.

y = 12.50 + 1.25x.

Therefore, y = 12.50 + 1.25x is the linear equation that can be used to determine the cost for anyone who only pays for x ride tickets and $ 12.50 fair admission.

8 0
3 years ago
Express the following quantities as ordinary decimal numbers: (step by step please)
jenyasd209 [6]

Answer:

a. 0.0000009 m

b. 6,130, 000, 000

c. 100,000 light years

d. 0.00001 mm

e. 0.0000010 kg

Step-by-step explanation:

Here, we want to come from the standard form to the decimal form

In doing this, we consider the power of 10 attached

If negative, we count leftwards, if positive, we count right-wards

The number of times we count is the power of 10 attached. The count means we are moving the decimal point

For numbers with out visible decimal point, it is at the back of the most right-ward number

Thus, we have these as;

a. 9 * 10^-7

= 0.0000009 m

b. 6.130 * 10^9

= 6,130, 000, 000

c. 1 * 10^5

= 100,000 light years

d. 1 * 10^-5 mm

= 0.00001 mm

e. 10^-7

= 0.0000010 kg

8 0
3 years ago
Sophie had a 15% off coupon for the book store. The original price of
tangare [24]

。ₓ ू ₒ ु ˚ Your answer would be 12.75! ˚ ू ₒ ु ₓ。

⭒❃.✮:▹ Considering 15% of 14.99 is 2.24, we would need to subtract that amount from 14.99.

14.99 - 2.24 = 12.75. ◃:✮.❃⭒

Hope this helps! ♡

3 0
3 years ago
Read 2 more answers
The point P=\left(-\frac{\sqrt{33}}{7},\,\, y\right)P=(− 7 33 ​ ​ ,y) lies on the unit circle shown below. What is the value of
kifflom [539]

Answer:

y = √-1040/7

Step-by-step explanation:

The equation of a unit circle is expressed as;

x²+y² = 1

Given the coordinate of P = (-33/7, y)

Substitute the coordinate into the give expression and find y;

(-33/7)²+y² = 1

Expand

y² = 1-(-33/7)²

According to difference of two square

y² = (1+(-33/7))1-(-33/7))

y² = (1-33/7)(1+33/7)

y² = -26/7(40/7)

y² = -1040/49

y= √-1040/49

y = √-1040/√49

y = √-1040/7

Hence the value of y is y = √-1040/7

4 0
3 years ago
How do these numbers compare? 9.002 9.022
Marianna [84]
9.002 < 9.022
9.022 is a larger number than 9.002
5 0
3 years ago
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