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3 years ago

A line passes through the points (7, 10) and (7, 20). Which statement is true about the line?

2 answers:

5 0

Answer: D) It has no slope because x 2 minus x 1 in the formula m = StartFraction y 2 minus y 1 Over x 2 minus x 1 EndFraction is zero, and the denominator of a fraction cannot be zero.

Step-by-step explanation:

slope is y2-y1/x2-x1

20-10/7-7

10/0

denominator can't be 0

Gennadij [26K]3 years ago

4 0

Answer:

Step-by-step explanation:

cause i said so

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A model of a famous statue is 2 and one half inches tall. The actual statue is 6 and one fourth feet tall. What is the ratio of

mel-nik [20]

ratio is 75:2.5

30:1is the answer

8 0

3 years ago

Sec(pi/2 -x) =csc x true or false

jeka94

Answer:

true

Step-by-step explanation:

if you rewrite $sec\left(\frac{\pi }{2}\:-x\right)$ with trigonometric identities:

$sec\left(\frac{\pi }{2}\:-x\right)$ $=\frac{1}{\sin \left(x\right)}$

$\frac{1}{\sin \left(x\right)}$ $=\csc \left(x\right)$

so, yes, $sec\left(\frac{\pi }{2}\:-x\right)$ $=\csc \left(x\right)$

hope this helps!!

6 0

2 years ago

A ship of unknown heightis sighted from a lighthouse. From the top of the lighthouse, the angle of depression to the top of the

blagie [28]

Answer:

Step-by-step explanation:

From the given information, consider DB=x be the height of the ship, BC= 50 m, then DE=50 m.

Now, From ΔABC,

$\frac{AC}{BC}=tan45^{\circ}$

⇒ $AC=50 m$

Also, from ΔADE, DE=50 m, we have

$\frac{AE}{DE}=tan30^{\circ}$

⇒ $\frac{AE}{50}=\frac{1}{\sqrt{3}}$

$AE=\frac{50}{\sqrt{3}}$

Now, AC=AE+EC

⇒ $50=\frac{50}{\sqrt{3}}+EC$

⇒ $EC=50-\frac{50}{\sqrt{3}}$

⇒ $EC=50-\frac{50}{1.732}$

⇒ $EC=50-28.86=21.14 m$

Also, we know that EC=BD, therefore BD=21.14 meters.

Thus,the height of the ship= 21.14 meters.

7 0

3 years ago

Joshua has a 32 ounce flavored water. He drinks 30 ounces. Enter the percentage of ounces Joshua has left of his flavored water.

marta [7]

Answer:

the percentage of flavored water Joshua has left = 6.25%

Step-by-step explanation:

The volume of flavored water Joshua has is 32 ounces, he then drinks 30 ounces of the flavored water.

To get the volume of flavored water Joshua has left we subtract the volume of water drank by Joshua from the volume of water Joshua had at first.

Therefore the volume of water Joshua has left = (32 - 30) ounces = 2 ounces.

Percentage of a number is a ratio expressed in fraction of 100. To get the percentage of flavored water Joshua has left, we get divide the volume of water Joshua has left by initial volume of flavored water and multiply it by 100.

Therefore the percentage of flavored water Joshua has left = $\frac{2}{32} *100$

= 0.0625 × 100 = 6.25%

8 0

4 years ago

1/3 x (9/4 x 12) -3<br> solve this problem

ElenaW [278]

Answer:

its 6

Step-by-step explanation:

4 0

3 years ago