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solmaris [256]
3 years ago
15

If anybody can help me with questions 5-8 that will be awesome!!! THANK YOU SO MUCHHHHG

Mathematics
1 answer:
Molodets [167]3 years ago
3 0

Answer:

5. B

6. B

7. D

8. D

<u><</u> means a filled in circle.

Hope this helps!

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If the top of a 4.50 m ladder reaches twice as far up a vertical wall as the foot of the
STALIN [3.7K]

Answer:

4 m.

Step-by-step explanation:

Length of ladder, L = 4.50 m

Base of ladder from the wall, B = x

Height of the wall, H = 2x

Using Pythagoras theorem

L^2 = B^2 + H^2

4.5^2 = x^2 + (2x)^2

5x^2 = 4.5^2

x = 2\ m\ (approx.)

Height of the wall  is equal to 2 x 2 = 4 m.

6 0
3 years ago
33% of what number is 1.45
MAVERICK [17]
33% of 4.3939 is 1.45 

Convert your percentage into a decimal:
\frac{33}{100} = 0.33

Divide both of your decimals:
1.45 \div 0.33 = 4.3939
8 0
3 years ago
Help me ASAP PLEASE
tamaranim1 [39]

Answer:

Your(my) number is 40

Step-by-step explanation:

I. Given 80/something, + 13, * 5 = 75 when x is something

So [  \frac{80}{x} + 13 ]5 = 75

     [ \frac{400}{x} + 65] = 75

     \frac{400}{x} = 75 - 65

     \frac{400}{x}  = 10

     400 = 10x

        x = 40

II. Prove by replace 40 in x

    [(80/40) + 13]5 = 75

    [2 + 13] 5 = 75

    (15)5 = 75

        75 = 75 true

Ask me for anything.

5 0
2 years ago
Evaluate 3xy²-y³ for x=-1 and y=2.<br><br>help.​
yanalaym [24]
The answer to this problem is -20
7 0
2 years ago
Read 2 more answers
Marco has drawn a line to represent the perpendicular cross-section of the triangular prism. Is he correct? Explain. triangular
evablogger [386]

Answer:

The correct option is;

Yes, the line should be perpendicular to one of the rectangular faces

Step-by-step explanation:

The given information are;

A triangular prism lying on a rectangular base and a line drawn along the slant height

A perpendicular bisector should therefore be perpendicular with reference to the base of the triangular prism such that the cross section will be congruent to the triangular faces

Therefore Marco is correct and the correct option is yes, the line should be perpendicular to one of the rectangular faces (the face the prism is lying on).

8 0
2 years ago
Read 2 more answers
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