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rjkz [21]
3 years ago
13

Rubi charges each family that she babysits a flat fee of $20 for the night

Mathematics
1 answer:
Zinaida [17]3 years ago
7 0

Answer:  7x + 20 = 90

Step-by-step explanation:

Let x be the number of children she babysat.

7x + 20 = 90

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I'm a little bit confused about how to approach this can someone help?
Taya2010 [7]

Answer:

4

Step-by-step explanation:

ΔABC is congruent with ΔDEF.  That means the corresponding sides are congruent.

Look at the order of the letters.  EF are the last two letters of ΔDEF.  So this corresponds with the last two letters of ΔABC.  Therefore, EF ≅ BC.

EF ≅ BC

x² + 8x = 48

x² + 8x − 48 = 0

(x + 12) (x − 4) = 0

x = -12 or 4

Since x can't be negative, x = 4.

5 0
3 years ago
If you spun the spinner 100 times, how many times do you predict that you would spin a number less than 5 on a spinner of 1-6
Roman55 [17]

Answer:

67 times

Step-by-step explanation:

Spinner's sample space = (1, 2, 3, 4, 5, 6)

Number less than 5 = (1, 2, 3, 4)

Total possible outcomes = 6

Required outcome = 4

P(number less than 5) = required outcome / Total possible outcomes

P(number less than 5) = 4 /6 = 2/3

Number of spins = 100

Predicted Number of times a number less than less than 5 is spurn in 100 spins :

100 * 2/3

= 66.666

= 67 times

8 0
3 years ago
How many triangles can be constructed with sides measuring 14cm 8cm and 5cm
Nataly_w [17]

Answer:

Option B none

Step-by-step explanation:

we know that

The <u>Triangle Inequality Theorem</u>, states that the sum of the lengths of any two sides of a triangle is greater than the length of the third side

Applying the triangle inequality Theorem

1) 14+8 > 5

22 > 5 -----> is true

2) 8+5 > 14

13 > 14 ---> is not true

therefore

No triangles can be constructed with the given sides

8 0
3 years ago
The formula PV = 300 R is used in chemistry. How can this formula be solved for P
german
P = 300/V

Because in order to isolate P, you have to divide V on both sides.
4 0
3 years ago
What is the slope-intercept equation of the line below?
Andru [333]

Answer:

y= -3x+4

I hope this helps <3 have an amazing and wonderful day <3

Step-by-step explanation:

3 0
3 years ago
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