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Alina [70]
3 years ago
15

Problem referred below please help

Mathematics
1 answer:
zaharov [31]3 years ago
6 0

Answer:

60

Step-by-step explanation:

Perimeter = 2l + 2w

57x2 = 114

234 - 114 = 120

120 / 2 = 60

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The sales tax in your city is 4.4%, and an item cost $3 before tax
adoni [48]

Answer:

after tax is added the price would be 3.13$

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
I don't get it at all please help me
meriva
Set the formula up and insert the stuff

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3 years ago
The height of a triangle is 3cm less than twice the base. The area is 10cm2
Kamila [148]

Answer:

The base is 4cm and the height is 5cm.

Step-by-step explanation:

This is a solve the system question. Call H the height of the triangle and B the base. The question tells us:

H=2B-3

and

\frac{B \times H}{2}=10

Sub the first equation into the second (as H is already isolated). You will end up with a quadratic equation - solve that any way you wish (e.g. quadratic formula). I've provided the factored form below which shows you the roots:

\frac{B(2B-3)}{2}=10\\\frac{2B^2-3B}{2}=10\\2B^2-3B=20\\2B^2-3B-20=0\\(2B+5)(B-4)=0\\B= - \frac{5}{2},4

In this question, we take B=4. You can't have a negative side length so the other answer is eliminated. Now sub the value for B into either of the original equations. I'll use the first, again because H is already isolated:

H=2(4)-3\\H=8-3\\H=5

3 0
3 years ago
Solve for t.
Nuetrik [128]
1.C  2.B  3.B&C  No shape shown for number 4 otherwise I would be of more help.
6 0
4 years ago
NEED HELP WITH THESE TWO ASAP PLS
Setler79 [48]

25 for the first one

(-5-2=-7 -7x-3=21 21+4=25)

220 for the second one

(10x-2=-20 -20+(-2)=-22 -22x-10=220)

3 0
4 years ago
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