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Sedaia [141]
3 years ago
7

John must have at least 289 test points to pass his math class. He already has test scores of 72, 78, and 70. Which inequality w

ill tell him at least how many more points he needs to pass the class? A. 72 + 78 + 70 + x 289 B. 72 + 78 + 70 + x > 289 C. 72 + 78 + 70 + x < 289 D. 72 + 78 + 70 + x 289
Mathematics
2 answers:
Bas_tet [7]3 years ago
5 0

Answer:

<h2>B. 72 + 78 + 70 + x > 289</h2>

Step-by-step explanation:

To solve this problem, you just have to remember that "at leat" means a least value, that is, John must have 289 or more points to pass the exam. Therefore is he has > 289, he definitely will pass.

So, the right expression must include the sum of all scores with a > sign.

The exact expression would be

72+78+70>289

Therefore, the right answer is B.

algol [13]3 years ago
4 0

B. 72 + 78 + 70 + x > 289

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Chas and Tyler have been collecting video games. Chas has 25 video games, and Tyler has mm video games. Together they have a tot
Sladkaya [172]

Answer:

Tyler has 40 video games

Step-by-step explanation:

x= chas

y= tyler

z= total

x+y=z

25+y=65

-25      -25

y= 40

8 0
3 years ago
MICHELLE TOSSES TWO COINS AND THEN DRAWS A CARD FROM A STANDARD DECK OF 52.
Marianna [84]

Answer:coins both a 50 50 chance and the cards have a 1 of a 52 chance of being drawn.

Step-by-step explanation: hope it helps and can you make me brainliest.

8 0
3 years ago
HELP ME PLEASE!!
LUCKY_DIMON [66]

Using a system of equation, we have that:

a)

  • x, which is the cost of on-site service.
  • y, which is the cost of at-store service.
  • z, which is the cost of by-mail service.

b)

The system is:

x = 3y

z = y - 10

15x + 40y + 5z = 3100

c)

The cost of one on-site repair service is of $90.

Item a:

The variables are:

  • x, which is the cost of on-site service.
  • y, which is the cost of at-store service.
  • z, which is the cost of by-mail service.

Item b:

On-site service costs <u>3 times as much as at-store service</u>, thus:

x = 3y

By mail service costs <u>$10 less than at-store</u>  service, thus:

z = y - 10

Last week, the shop completed <u>15 services on-site, 40 services at-store, and 5 services by mail for total sales of $3100</u>, thus:

15x + 40y + 5z = 3100

The system is:

x = 3y

z = y - 10

15x + 40y + 5z = 3100

Item c:

  • The cost of one on-site repair service is x.
  • First, replacing the first two equations into the third, we find y, and then with it we find x.

15x + 40y + 5z = 3100

15(4y) + 40y + 5(y - 10) = 3100

60y + 40y + 5y = 3150

105y = 3150

y = \frac{3150}{105}

y = 30

Then

x = 3y = 3(30) = 90

The cost of one on-site repair service is of $90.

A similar problem is given at brainly.com/question/24823220

3 0
2 years ago
I made my own tricky math question. But I don't know if its tricky for you. Amelia has 1 notebook on her desk, she put her noteb
fomenos

Answer:

1 thing, her pouch

Step-by-step explanation:

you sayed that she took her notebook away and the only thing onher desk is her pouch

5 0
2 years ago
Find the equation of the line. <br> Use exact numbers.
AlekseyPX
The slope of the line (m) = 3/1  = 3  
and the y intercept is at (0,3)  that is y = 3  so b = 3

using the slope intercept form y = mx + b

m = 3 and b = 3

so answer is y = 3x + 3
8 0
3 years ago
Read 2 more answers
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