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sergey [27]
3 years ago
15

Quick help: 7th grade hw question

Mathematics
1 answer:
Klio2033 [76]3 years ago
5 0
One rose is $2.50

You have $220

How I solved the total cost of one rose was I did 30/12 to get 2.5.

Then to solve my amount of money I have, I did 30 x 7 then I did 2.5 x 4 and added those totals together
.
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Determine if a quadrilateral with the given vertices is an isosceles trapezoid. Show and explain all steps to prove or disprove.
Inga [223]

Step-by-step explanation:

explain all steps to prove or disprove.

A(-5,0) B(5,0)

8 0
2 years ago
Please do It fast, I need it
jeka94

The reduction was 1/5.

Because you are given the reduced values, multiply the reduced value by the inverrse of the factor:

Inverse of 1/5 = 5

Height = 3 x5 = 15

Base = 5 x 5 = 25

The base is 25

6 0
2 years ago
What is the geometric mean of 8 and 10?
nekit [7.7K]
If the smaller number is x, then the larger number has to be 20 - x in order for the arithmetic mean to be 10, as their sum must be 20.

If the geometric mean is 8 the product of the numbers has to be 64 and so the larger number is 64/x

Solving 64/x = 20 - x gives the quadratic x^2 -20x +64 = 0 so x = 4 or 16.

The two numbers are 4 and 16.
3 0
2 years ago
Read 2 more answers
HELP CONGRUENT ANGLES
Gemiola [76]
\dfrac{RP}{RQ}=\dfrac{LJ}{LK}\\
\dfrac{RP}{1.6}=\dfrac{5.4}{3.2}\\
3.2RP=8.64\\
RP=2.7
6 0
3 years ago
I need help pleasssss
Yakvenalex [24]

Answer:

  3)  16.2

Step-by-step explanation:

The supplement to the 115° angle on the right is 65°, the same as the angle at upper left. The vertical angles at C are the same measure, so this tells you that the two triangles FCB and ACD are similar by the AA similarity postulate. That being the case, corresponding sides are proportional:

  CB/CD = CF/CA

  CB = CD·CF/CA = 7.2·21.6/9.6

  CB = 16.2

_____

When given two "point-to-point" triangles like this, quite often there is some sort of similarity relationship involved. First, you need to figure out what it is; then you need to make use of it as needed to answer the question being asked.

4 0
3 years ago
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