All categories

4 years ago

15(d + 7) = 4(d - 4) + 11d has how many solutions?

Mathematics

1 answer:

svp [43]4 years ago

4 0

$15(d + 7) = 4(d - 4) + 11d\\\\15d+105=4d-16+11d\\\\15d-4d-11d=-16-105\\\\0=-121$

no solution

You might be interested in

1+secA/sec A = sin^2 A / 1-cos A

Fofino [41]

Answer: see proof below

<u>Step-by-step explanation:</u>

$\dfrac{1+\sec A}{\sec A}=\dfrac{\sin^2 A}{1-\cos A}$

Use the following Identities:

sec Ф = 1/cos Ф

cos² Ф + sin² Ф = 1

<u>Proof LHS → RHS</u>

$\text{LHS:}\qquad \qquad \dfrac{1+\sec A}{\sec A}$

$\text{Identity:}\qquad \qquad \dfrac{1+\frac{1}{\cos A}}{\frac{1}{\cos A}}$

$\text{Simplify:}\qquad \qquad \dfrac{\frac{\cos A+1}{\cos A}}{\frac{1}{\cos A}}\\\\\\.\qquad \qquad \qquad =\dfrac{1+\cos A}{1}$

$\text{Multiply:}\qquad \qquad \dfrac{1+\cos A}{1}\cdot \bigg(\dfrac{1-\cos A}{1-\cos A}\bigg)\\\\\\.\qquad \qquad \qquad =\dfrac{1-\cos^2 A}{1-\cos A}$

$\text{Identity:}\qquad \qquad \dfrac{\sin^2 A}{1-\cos A}$

$\text{LHS = RHS:}\quad \dfrac{\sin^2 A}{1-\cos A}=\dfrac{\sin^2 A}{1-\cos A}\quad \checkmark$

3 0

4 years ago

URGENT! 20 POINTS

Nonamiya [84]

Answer:

128; 137

Step-by-step explanation:

Plug the arm span into the formula

5 0

4 years ago

Help. answer is not D

PilotLPTM [1.2K]

Answer:

It would be C or B

Step-by-step explanation:

can't be A because A is 0 and there is no way you could be able to draw 0 lines so it would most likely be C

4 0

3 years ago

Find three solution of equation 4x+3y=12

ipn [44]

X 3 0 4
Y 0 4 -4

Hope it helps

And don’t forget to mark as brainliest

7 0

3 years ago

Read 2 more answers

You know that a pair of triangles has two pairs of congruent corresponding angles. what other information do you need to show th

Marina86 [1]

Congrunt sides you need it

6 0

3 years ago