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3 years ago

Answer the following correctly please

Mathematics

1 answer:

ladessa [460]3 years ago

8 0

1 would be B. 2 would be a

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How do you factor by grouping

Zanzabum

If you have a quadratic equation in the form ax2+bx+c
Step 1) Determine the product of AC (the coefficients in a quadratic equation)Step 2) Determine what factors of a⋅c sum to bStep 3) "ungroup" the middle term to become the sum of the factors found in step 2Step 4) group the pairs.

3 0

3 years ago

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Right triangles abc and dbc with right angle c are given below. If cos(a)=15,ab=12 and cd=2, find the length of bd.

dmitriy555 [2]

see the attached figure to better understand the problem

we have that

$cos(A)=\frac{1}{5} \\ AB=12\ units\\ CD=2\ units$

Step 1

Find the value of AC

we know that

in the right triangle ABC

$cos (A)=(AC/AB)\\AC=AB*cos(A)$

substitute the values in the formula

$AC=12*(1/5)\\ AC=2.4\ units$

Step 2

Find the value of BC

we know that

in the right triangle ABC

Applying the Pythagorean Theorem

$AB^{2} =AC^{2}+BC^{2}\\ BC^{2}=AB^{2} -AC^{2}$

substitute the values

$BC^{2}=12^{2} -2.4^{2}\\BC^{2}= 138.24\\ BC=11.76\ units$

Step 3

Find the value of BD

we know that

in the right triangle BCD

Applying the Pythagorean Theorem

$BD^{2} =DC^{2}+BC^{2}$

substitute the values

$BD^{2} =2^{2}+11.76^{2}$

$BD=11.93\ units$

therefore

the answer is

the length of BD is 11.93 units

8 0

3 years ago

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a garden table and a bench cost $1,025 combined the garden table cost $75 more than the bench what is the cost of the bench

lukranit [14]

It costs 1,100
you just add the two

7 0

3 years ago

23,234,008 is what % of 41,892,128

zhuklara [117]

Answer:

The answer would round to 55%

Step-by-step explanation:

3 0

3 years ago

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Is it possible that for every right triangle, it has two complementary angles?

Montano1993 [528]

Yes, every right triangle has two complementary angles.

This is because you know that the interior angles of a triangle have to add up to 180 degrees.

A right angle is 90 degrees, so the remaining two angles have to add up to (180-90) degrees, or 90 degrees.

Two angles whose sum is 90 degrees are complementary.

3 0

3 years ago