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3 years ago

I've been sitting on this problem for 2 hours! AND I STILL DON'T KNOW WHAT THE HECK IT ISSS!!!!

Mathematics

1 answer:

MArishka [77]3 years ago

7 0

Answer:

Step-by-step explanation:

Use foil to expand it.

y = 4 (x^2 + 7x - 9x - 63) Combine the like terms on the right.

y = 4(x^2 - 2x - 63) Use the distributive property to remove the brackets.

y = 4x^2 - 8x - 4*63 Combine the two multiplied factors on the right.

y = 4x^2 - 8x - 252 4* 63 = 252

The answer is A

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100 points

nikitadnepr [17]

Answer:

Step-by-step explanation:

√3(√6+√15)

3√2+3√5

2√3+3√5

3√7

3√2+9√5

7 0

2 years ago

Can someone please help me with answering this

insens350 [35]

Answer:

? = 1 (assuming right-angled triangle)

Step-by-step explanation:

This is an application of Pythagoras' Theorem, but rearranged:

$a^{2} = c^{2} - b^{2}$

$\sqrt{10}^{2}$ is, of course, 10, so 10 - 9 = 1, and $\sqrt{1} = 1$ .

3 0

2 years ago

Find x if m ∠ GHI = 173°, m ∠ GHQ = 29 + x, and m ∠ QHI = x + 162.

Kamila [148]

Answer:

Step-by-step explanation:

Given the following angles;

m ∠ GHI = 173°

m ∠ GHQ = 29 + x

m ∠ QHI = x + 162

The following expression is true for the three angles;

m ∠ GHI = m ∠ GHQ+ m ∠ QHI

substitute the given values into the formula and calculate x

173 = 29+x+x+162

173 = 29+162+2x

173 = 191+2x

2x = 173 - 191

2x = -18

x = -18/2

x = -9

Hence the value of x is -9

8 0

2 years ago

WILL MARK BRAINIEST!!1 PLZ HELP!25 points!!! The coordinate grid shows points A through K. What point is a solution to the syste

marishachu [46]

Answer:

A, C, D and K

Step-by-step explanation:

Inequalities:

y ≤ −2x + 10 and y >1/2x-2

<u>Finding zeros for the first inequality:</u>

x=0 ⇒ y= 10, point (0, 10)
y=0 ⇒ x= 5, point (5, 0)

Locating these 2 points and connecting to get the first line.

Space to the left of this line (as y≤ ) is the solution for this inequality, any points on this line are inclusive.

<u>Finding zeros for the second inequality:</u>

x=0 ⇒ y= -2, point (0, -2)
y= 0 ⇒ x= 4, point (4, 0)

Locating these points and connecting to get the second line.

Space above this line (as y > sign) is the solution for this inequality, any points on this line are not inclusive.

Now we have the space of intersection of the above inequalities.

So the points in same section are the solution.

They are:

Points A, C, D and K

See attached for explanation

7 0

3 years ago

An art teacher has a total of 5/8 pound of clay.The teacher puts 1/32 pound of clay at each work station.How many total work sta

defon

Answer: Total work stations = 20

Step-by-step explanation:

Total clay = $\dfrac58$ pound

Clay at each work station = $\dfrac1{32}$ pound

Total work stations = (Total clay ) ÷ (Clay at each work station )

$=\dfrac58\div\dfrac{1}{32}\\\\=\dfrac58\times32\\\\= 5\times4\\\\= 20$

Hence, Total work stations = 20

7 0

3 years ago