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serg [7]
3 years ago
13

Pleaseeee help meeee

Mathematics
1 answer:
yan [13]3 years ago
4 0
Don’t really know if you still need help
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On a road trip, Yousef drove the same distance everyday for 8 days. On the ninth day, he drove 100 km. He drove a total of
OLga [1]

Answer:

8x+100=1700

Step-by-step explanation:

8x+100=1700

8x+100-100=1700-100

8x=1600

8/8x=1600/8

x=200

4 0
3 years ago
12 yellow balls and 7 red balls are placed in an urn. two balls are then drawn in succession without replacement. what is the pr
xxMikexx [17]

Total number of balls = 12 + 7 = 19


p(first ball is a red) = 7/19


Answer: 7/19

6 0
3 years ago
Find X. Enter a number for your answer. Do not type the symbol for degree or the<br> word "degrees"
Lena [83]

Use angle sum property (the 3 angles in a triangle sum up to 180°).

2x + x + 54 = 180

3x + 54 = 180

3x = 180 - 54

3x = 126

x = 126/3

x = 42

_____

Hope it helps ⚜

6 0
2 years ago
Read 2 more answers
I NEED HELP PLEASE, THANKS
castortr0y [4]

First, find the scale factor.

8.4 / 7 = 1.2

9 / 7.5 = 1.2

7.2 / 6 = 1.2

Since both solids are different sizes, the solids aren't congruent.

The size ratio for all the sides are:

8.4:7

9:7.5

7.2:6

Since the scale factor isn't 1:1 this also proves that the solids are NOT congruent.

Since both solids are the same kind of shape and have an identical scale factor, the solids are similar.

Best of Luck!

5 0
3 years ago
The weights of adobe bricks used for construction are normally distributed with a mean of 3 pounds and a standard deviation of 0
dedylja [7]

Answer:  a) 0.8413, b) 0.9987.

Step-by-step explanation:

Since we have given that

Mean = 3 pounds

Standard deviation = 0.25 pounds

n = 28 bricks

So, (a) What is the probability that all the bricks in the sample exceed 2.75 pounds?

P(X>2.75)\\\\=P(z>\dfrac{2.75-3}{0.25}\\\\=P(z>\dfrac{-0.25}{0.25})\\\\=P(z>-1)\\\\=0.8413

b) What is the probability that the heaviest brick in the sample exceeds 3.75 pounds?

P(X>3.75)\\\\=P(z>\dfrac{3.75-3}{0.25})\\\\=P(z>\dfrac{0.75}{0.25})\\\\=P(z>3)\\\\=0.9987

Hence, a) 0.8413, b) 0.9987.

4 0
3 years ago
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