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3 years ago

Pls help me! i’m very confused on this certain question.

Mathematics

1 answer:

Vitek1552 [10]3 years ago

7 0

Answer:

Step-by-step explanation:

scientific notation always contains a decimal number

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Paulie is buying a shirt that was originally priced at $15. The store has a today-only discount of 25%. What is today’s price fo

Aliun [14]

Answer:

$11.25

Step-by-step explanation:

15 divided by .25 is 3.75, so subtract 3.75 from 15 and its 11.25

3 0

2 years ago

Read 2 more answers

Which value of the vanable is a solution of the inequality? t<-6 7 6 -6 -7

oksian1 [2.3K]

Answer:

-7

Step-by-step explanation:

-7 is a solution of the inequality t<-6

By the way, for the number -6, you can think about a temperature below zero. When it is freezing 6 degrees below zero (-6) it is pretty cold.

The question is which number(s) can you substitute for t so that the formula (the inequality) is True.

So let's try for each given value and substitute it for t in t<-6

if you substitute 7 for t you get this:

Is 7 smaller then -6 ?

No that is not true because 7 is bigger then -6.

if you substitute 7 for t you get this:

Is 7 smaller then -6 ?

No that is not true because 7 is much bigger then -6.

if you substitute 6 for t you get this:

Is 6 smaller then -6 ?

No that is not true because 6 is much bigger then -6.

if you substitute -6 for t you get this:

Is -6 smaller then -6 ?

No, that is NOT true because -6 is exactly the same as -6 but NOT smaller then -6...

if you substitute-7 for t you get this:

Please think about temperatures below zero again.

Is -7 colder the -6 ? If so, then the statement is true...

Is -7 smaller then -6 ?

Yes that is true!

So -7 is a solution of the inequality t<-6

6 0

3 years ago

Eli and Samantha work at a dry cleaners ironing shirts. Eli can iron 20 shirts per hour, and Samantha can iron 35 shirts per hou

Tomtit [17]

Answer:

see the explanation

Step-by-step explanation:

Let

x ----> the number of hours Eli worked

y ----> the number of hours Samantha worked

we know that

Eli and they ironed 400 shirts between them

$20x+35y=400$ -----> equation A

Samantha worked 2 more hours than Eli

$y=x+2$ ----> equation B

solve the system by substitution

substitute equation B in equation A

$20x+35(x+2)=400$

solve for x

$20x+35x+70=400\\55x=330\\x=6$

Find the value of y

substitute the value of x in equation B

$y=6+2=8$

therefore

The number of hours Eli worked was 6 and the number of hours Samantha worked was 8

8 0

3 years ago

Please help with Algebra!!! 10 points!

Tju [1.3M]

4. D
5. A
6. C
7. D
8. D
9. B
10. B

5 0

3 years ago

15. Edgar Anderson earns $200 a week plus a 15% commission on all sales over $1,000. If Mr. Anderson's sales for one week are $2

Gwar [14]

15.

2500 X 15 = 37500
37500 ÷ 100 = 375
375 + 200 = 575
The answer is C.

16.
The easiest way to answer this question is by going through each answer one by one:

14:6 = 28:18
28 ÷ 14 = 2
18 ÷ 6 = 3
Since both numbers were multiplied by different numbers, we can establish that this is not a true proportion.

42:7 = 6:2
42 ÷ 7 = 6
7 ÷ 7 = 1
42:7 = 6:1
By dividing both numbers by the same number, we can establish that the answer is wrong.

2:3 = 3:2
This is obviously wrong. That is because, in ratios, the order counts. So the first 3 is more than the first 2, therefore the second number on the other side of the ratio should be more than the first.

3:5 = 12:20
12 ÷ 3 = 4
20 ÷ 5 = 4
Since both numbers were multiplied by the same number, this is a true proportion.

The answer is D.

6 0

2 years ago