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lidiya [134]
2 years ago
10

-23z7+(-3a) simplify

Mathematics
1 answer:
Brums [2.3K]2 years ago
3 0
The answer would be -161z-3a
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Jasmine buys 3 T-Shirts and 3 Hats for $11.25. The next day, he buys 4 T-Shirts and 2 Hats for $10. How much does each T-Shirt a
leonid [27]

Answer: Each shirt costs $1.25, and each hat costs $2.5.

Step-by-step explanation:

Let x= Cost per T-shirt, y = Cost per Hat.

As per given,

3x+3y=11.25        (i)

4x+2y=10             (ii)

Multiply 4 to equation (i)

12x+12y=45          (iii)

12x+6y= 30             (iv)

Eliminate (iv) from (iii), we get

6y= 15

⇒ y = 2.5

Put value of y in (i)

3x+3(2.5)=11.25

⇒3x+7.5=11.25

⇒3x= 3.75

⇒x= 1.25

Hence, each shirt costs $1.25, and each hat costs $2.5.

8 0
2 years ago
Will give 30 points!<br> What is a expanded notation?
gavmur [86]

Answer:

It is the number written out to show each digit

Step-by-step explanation:

Let's say you have the number 459

you write out the hundredths place, which is 4 times 100

you write out the tenths place which is 5 times 10

and you write out the oneths place which is 9 times 1

the full thing written out is 459 = 100×4 + 5×10 + 9 × 1

4 0
3 years ago
Anna had $54 in her purse. She bought a book for $26.34 and a book marker for $1.27. Anna’s mom then gave her $10 for completing
jekas [21]

Answer:

Anna has $36.39 dollars.

Step-by-step explanation:

All we have to do is subtract

54 - (26.34 + 1.27) =

54 - 27.61 =

36.39

So, the answer is 36.39

Hope this helps! :)

3 0
2 years ago
Read 2 more answers
Write an equation of the line that passes through the given points (1 , 1.5) and (2, 3.5)
Nitella [24]

Answer:

y=2x-0.5

Step-by-step explanation:

typically, the equation of the line is written in slope intercept form, which is y=mx+b, where m is the slope and b is the y intercept

first, we need to find the slope (m) of the line

the formula for slope calculated from two points is given as (y2-y1)/(x2-x1)

we have two points: (1,1.5) and (2,3.5) and we can label them

x1=1

y1=1.5

x2=2

y2=3.5

now plug into the formula:

m=(3.5-1.5)/(2-1)

m=2/1

m=2

the slope of the line is 2

here's our equation so far:

y=2x+b

now we need to find b

since the line will pass through the points (1, 1.5) and (2, 3.5), we can plug either one of them into the equation to solve for

Let's use (1, 1.5)

substitute 1.5 as y and 1 as x

1.5=2(1)+b

1.5=2+b

subtract 2 from both sides

-0.5=b

therefore, our equation is:

y=2x-0.5

hope this helps!

5 0
2 years ago
The sum of three consecutive integers is 72. What are the integers?
balu736 [363]
23 24 25 sum up to 72
6 0
3 years ago
Read 2 more answers
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