Ask question

Ask question

All categories

3 years ago

6

HELP!

2 answers:

devlian [24]3 years ago

8 0

Answer: C

Step-by-step explanation:

LiRa [457]3 years ago

7 0

C
Because 35 divided by 5 is 7

You might be interested in

Root 3 cosec140° - sec140°=4<br>prove that<br><br>

Lorico [155]

Answer:

Step-by-step explanation:

We are to show that $\sqrt{3} cosec140^{0} - sec140^{0} = 4\\$

<u>Proof:</u>

From trigonometry identity;

$cosec \theta = \frac{1}{sin\theta} \\sec\theta = \frac{1}{cos\theta}$

$\sqrt{3} cosec140^{0} - sec140^{0} \\= \frac{\sqrt{3} }{sin140} - \frac{1}{cos140} \\= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\$

From trigonometry, 2sinAcosA = Sin2A

$= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\\\= \frac{\sqrt{3}cos140-sin140 }{sin280/2}\\= \frac{4(\sqrt{3}/2cos140-1/2sin140) }{2sin280}\\\\= \frac{4(\sqrt{3}/2cos140-1/2sin140) }{sin280}\\since sin420 = \sqrt{3}/2 \ and \ cos420 = 1/2 \\ then\\\frac{4(sin420cos140-cos420sin140) }{sin280}$

Also note that sin(B-C) = sinBcosC - cosBsinC

sin420cos140 - cos420sin140 = sin(420-140)

The resulting equation becomes;

$\frac{4(sin(420-140)) }{sin280}$

= $\frac{4sin280}{sin280}\\ = 4 \ Proved!$

3 0

3 years ago

The odometer on your car shows the total number of miles traveled up to 99,999 miles, after it turns over it starts over at 0. I

jeka94

Answer:

2437miles

Step-by-step explanation:

amount left before it starts over = 999999-98654 = 1354

amount it will show = 3782-1354 = 2437

4 0

3 years ago

In systems by substitution what is y=x+8 and x+y=2

LenKa [72]

Answer:

x = -3

Step-by-step explanation:

y = x + 8 and x + y = 2

Using substitution, we know that y = x + 8, so:

x + y = 2

x + (x + 8) = 2

2x + 8 = 2

2x = -6

x = -3

Then we solve for y:

x + y = 2

-3 + y = 2

y = 2 + 3

y = 5

3 0

3 years ago

At north shire high school 87.5% of the teachers have a masters degree. If there are 128 teachers, how many have a masters degre

Radda [10]

We have been given that at north shire high school 87.5% of the teachers have a masters degree. Total number of teachers is 128.

Let us find how many teachers have a masters degree.

$\text{Teachers hold masters degree }=\frac{128\times 87.5}{100}$

$\text{Teachers hold masters degree }=1.28\times 87.5$

$\text{Teachers hold masters degree }=112$

Therefore, 112 teachers have a masters degree.

4 0

4 years ago

On a plane there are 2 seats on the left side and 3 seats on the right side. All together there are 150 seats in all.

Ahat [919]

There is no way to know unless you were given a row number or number of seats in a row

3 0

3 years ago