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3 years ago

What is this please? i’ll give you brainliest

Mathematics

2 answers:

Bess [88]3 years ago

6 0

Answer:

yes

Step-by-step explanation:

yes

Mariulka [41]3 years ago

5 0

Answer:

x-intercept: (12, 0)

y-intercept: (0, - 3)

Step-by-step explanation:

The x-intercept is the value of x when y = 0. Substitute 0 for y in the equation. Solve for x.

$y = \frac{1}{4} x - 3$

$0 = \frac{1}{4} x - 3$

$3 = \frac{1}{4} x$

$12 = x$

x-intercept: (12, 0)

The y-intercept is the value of y when x = 0. Substitute 0 for x in the equation. Solve for y.

$y = \frac{1}{4} x - 3$

$y = \frac{1}{4} (0) - 3$

$y = - 3$

y-intercept (0, - 3)

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Katy buys 4 DVDs every 2 weeks. How many DVDs will she buy in 14 weeks?

Lena [83]

Answer:

Step-by-step explanation:

Every 2 weeks 4 DVDs are purchased, so you have to multiply 14 times two, or 7 by 4. And the answer you get either way is 28.

4 0

3 years ago

The mass of a solid cube with side length of 2 cm is 12 g. Which is the closest to the density of the cube? Show your work. A)0.

yan [13]

D = m/v
V = 2•2•2 = 8cm^3
D = 12/8 = 1.5g/cm^3

Answer is B

3 0

3 years ago

Eduardo and Paul are leaving the same airport in Florida. Eduardo’s flight to Jamaica is 273 miles long. Paul's flight to Hondur

k0ka [10]

Answer:

B. 41.8° is the correct answer

Step-by-step explanation:

We are given that,

Length of Eduardo's flight path = 273 miles

Length of Paul's flight path = 357 miles

Distance between their destinations = 238 miles.

Now, using the law of cosines, we get,

$238^2=273^2+357^2-2\times 273\times 357\times \cos \theta$

i.e. $56644=74529+127449-194922\times \cos \theta$

i.e. $56644=201978-194922\times \cos \theta$

i.e. $194922\times \cos \theta=145334$

i.e. $\cos \theta=0.7456$

i.e. $\theta=\arccos 0.7456$

i.e. θ = 41.8°

Hence, the angle between their flight paths is 41.8°.

4 0

3 years ago

Determine if 3√10 /4 is in simplest form. if the expression is not in simplest form explain why? HELP PLEASE

emmasim [6.3K]

The notation in its current form isn't entirely clear.

Did you mean to write $\frac{3\sqrt{10}}{4}$ ? The 4 isn't in the square root.

If so, then the expression is in simplest form because we cannot simplify $\sqrt{10}$ any further (note how 10 doesn't have any perfect square factors other than 1).

Also, the 3/4 portion is fully reduced already.

------------------------

Or,

Did you mean to write $3\sqrt{\frac{10}{4}}$ ? This time the 4 is inside the square root.

If so, then we can simplify like this

$3\sqrt{\frac{10}{4}}\\\\\frac{3\sqrt{10}}{\sqrt{4}}\\\\\frac{3\sqrt{10}}{2}\\\\$

This means that $3\sqrt{\frac{10}{4}}=\frac{3\sqrt{10}}{2}\\\\$

7 0

3 years ago

What does a equal -5(6a+21)=-15

Anettt [7]

Step 1 remove paranthesis
(-30a-105)=-15

Step 2: Move constant to RHS (take not negative sign is removed if sides are changed and vice versa)

-30a=-15+105
-30a=90

Step 3: Simplify
-a=3

Step 4: remove negative sign from variable
a=3

6 0

3 years ago