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Phantasy [73]
3 years ago
12

Can someone help me answer questions 10 and 11?

Mathematics
1 answer:
antoniya [11.8K]3 years ago
5 0
10. Answer is 9 . (51 - 6) / ( 3.5+5.5)
11. 5x-18 - 4x = -36
x -18 = -36
x = -18
Answer is -18
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Given a cone 10 feet tall with a diameter of 10 feet, determine the radius of the smaller cone created when a horizontal plane p
11111nata11111 [884]

Answer:

r=3 ft

Step-by-step explanation:

it is similarity of two triangles

one

perpendicular side=10 ft

base=10/2=5 ft

second

perpendicular side=10-4=6 ft

Base r=?

\frac{r}{5}=\frac{6}{10}\\r= \frac{6}{10} \times 5=3~ft

8 0
3 years ago
Find the slope of the line passing through the pairs of points and describe the line as rising, falling, horizontal or vertical.
Anna [14]

Answer:

a.\ m=2,\ \text{the line is rising}\\\\b.\ m=-\dfrac{5}{4},\ \text{the line is falling}\\\\c.\ m=0,\ \text{the line is horizontal}\\\\d.\ m\ is\ unde fined,\ \text{the line is vertical}

Step-by-step explanation:

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

If

m > 0, then a line is rising

m < 0, then a line is falling

m = 0, then a line is horizontal

m is undefined, then a line is vertical

<h2>a.</h2>

(2, 1) and (4, 5)

m=\dfrac{5-1}{4-2}=\dfrac{4}{2}=2>0\to\text{rising}

<h2>b.</h2>

(-1, 0) and (3, -5)

m=\dfrac{-5-0}{3-(-1)}=\dfrac{-5}{4}=-\dfrac{5}{4}

<h2>c.</h2>

(2, 1) and (-3, 1)

m=\dfrac{1-1}{-3-2}=\dfrac{0}{-5}=0\to\text{horizontal}

<h2>d.</h2>

(-1, 2) and (-1, -5)

m=\dfrac{-5-2}{-1-(-1))}=\dfrac{-7}{0}\ \text{UNDEFINED}\to\text{vertical}

7 0
3 years ago
How do you estimate the sum of 198,260+31,900?
Vesnalui [34]

To estimate an amount to the tenth we have 3 steps to follow: ...

STEP 2: We add the rounded numbers. ...

STEP 1: Round the summands.

STEP 2: Add the rounded numbers.

STEP 3: Look at the total amount of rounding.

We have rounded the two summands down.

4 0
3 years ago
What is the quotient of 9.83 divided by 89.56
pav-90 [236]
Answer:

<span><span><span>34</span><span>23</span></span>=<span>98</span></span>

Explanation:

<span><span><span>34</span><span>23</span></span>=<span>?
</span></span>

4 0
3 years ago
Two students agree to meet at a restaurant between 6pm and 7pm.  Suppose they each agree to wait 15 minutes or until 7pm (whiche
Sauron [17]

Answer:

7/16

Approximately 0.44

Step by step explanation:

For the 1st student to arrive before 2nd student,

* the probability that he(1st student)to arrive during 3/4 hrs = 3/4

*Then he(1st student) will need to wait for 1/4 hrs

*The probability that he(1st student) arrive during the last 1/4 hrs = 1/4

*Then he(1st student) waits for average of 1/8 hrs (1/4 + 1/4)=1/8

*The total time he(1st student) wait = (3/4 ×1/4) +(1/4× 1/8) = 7/32

*For 1st and 2nd student to meet, the 2nd student need to arrive when 1st student is still arround, therefore the probability that 2nd student arrives when 1st student is arround = 7/32

*If 2nd student arrives before 1st student, the probability that they would meet is 7/32

* Adding both together 7/32 + 7/32 = 7/16

ANSWER = 0.4375

=0.44

5 0
3 years ago
Read 2 more answers
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