All categories

2 years ago

Can someone please help?

Mathematics

2 answers:

Elis [28]2 years ago

7 0

Answer:sure

Step-by-step explanation:

Zinaida [17]2 years ago

4 0

Answer:

x=11 and the measure for angle B is 80

Step-by-step explanation:

First you would set the equations equal to each other

8x-8 = 5x+25

-5x -5x

Then i subtracted 5x from both sides

3x-8 = 25

+8 +8

Then I added 8 to both sides

3x = 33

Divide both sides by three and you'll get x=11

You might be interested in

Which list shows these numbers in ascending order?<br> -V6, 2, -23, 2.5

Kryger [21]

-v6,-23,2,2.5
Correct to ascending order

3 0

2 years ago

Please help it’s timed !!!! 80 points!!!!

Irina18 [472]

Answer:

The answer to your question is the letter a) √3/3

Step-by-step explanation:

Data

find tan 30°

Use the triangle 30°-60°-90° (see the picture below)

Tangent is the trigonometric function that relates the Opposite side and the adjacent side.

tan Ф = Opposite side / Adjacent side

-Substitution

tan Ф = 1/√3

or 1/√3 √3/√3 = √3/3

3 0

2 years ago

Read 2 more answers

A horizontal trough is 16 m long, and its end are isosceles trapezoids with an altitude of 4 m, a lower base of 4 m, and an uppe

Ganezh [65]

Answer:

0.28cm/min

Step-by-step explanation:

Given the horizontal trough whose ends are isosceles trapezoid

Volume of the Trough =Base Area X Height

=Area of the Trapezoid X Height of the Trough (H)

The length of the base of the trough is constant but as water leaves the trough, the length of the top of the trough at any height h is 4+2x (See the Diagram)

The Volume of water in the trough at any time

$Volume=\frac{1}{2} (b_{1}+4+2x)h X H$

$Volume=\frac{1}{2} (4+4+2x)h X 16$

=8h(8+2x)

V=64h+16hx

We are not given a value for x, however we can express x in terms of h from Figure 3 using Similar Triangles

x/h=1/4

4x=h

x=h/4

Substituting x=h/4 into the Volume, V

$V=64h+16h(\frac{h}{4})$

$V=64h+4h^2\\\frac{dV}{dt}= 64\frac{dh}{dt}+8h \frac{dh}{dt}$

h=3m,

dV/dt=25cm/min=0.25 m/min

$0.25= (64+8*3) \frac{dh}{dt}\\0.25=88\frac{dh}{dt}\\\frac{dh}{dt}=\frac{0.25}{88}$

=0.002841m/min =0.28cm/min

The rate is the water being drawn from the trough is 0.28cm/min.

3 0

3 years ago

What is the mean absolute deviation and what does it tell you about data set

kakasveta [241]

It is the average distance between each data value and the mean<span>.</span>

5 0

2 years ago

A software store has put some of its inventory on sale. Games are marked down by 15%, and security programs are marked down by 1

Katyanochek1 [597]

Answer:

Option D. $\$11.34$

Step-by-step explanation:

Let

x -----> the original price of one game

y ----> the original price of one security programs

Remember that

$100\%-15\%=85\%=85\100=0.85$

$100\%-18\%=82\%=82\100=0.82$

The total pay with discount is

$\$35.70+\$22.96=\$58.66$

we have that

$0.85(2x)=35.70\\1.70x=35.70\\x=\$21$

$0.82y=22.96\\y=\$28$

Find the total pay without discount

$2x+y=2(21)+28=\$70$

The amount saved is the difference

$\$70-\$58.66=\$11.34$

5 0

3 years ago

Read 2 more answers