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3 years ago

Pls answer this quick! Thank you!

Mathematics

1 answer:

aliya0001 [1]3 years ago

8 0

Answer:

The answer is -11 and -9 only

Step-by-step explanation:

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Susan is twice as old as Lana. The sum of their ages 4 years ago was 37. Find how old they are now

SpyIntel [72]

Answer:

luna 15

susan 30

Step-by-step explanation:

4 0

4 years ago

daniel had $25 to spend at the fair if the admission to the fair is 4 and the rides cost $1.50 each, what is the greatest number

Elena-2011 [213]

$25 to spend
Admission cost $4
Rides are $1.50

25-4=21
$21 left
21÷1.50=14
14×1.50=21

He is able to ride on 14 rides max

7 0

3 years ago

Verify sin^4x-sin^2x=cos^4x-cos^2x is an identity

lara [203]

ANSWER

See below

EXPLANATION

We want to verify that,

${ \sin ^{4} x} - { \sin^{2} x} = { \cos ^{4} x} - { \cos^{2} x}$

To verify this identity, we can take the left hand side simplify it to get the right hand side or vice versa.

${ \sin ^{4} x} - { \sin^{2} x} =( { \sin ^{2} x} )^{2} - { \sin^{2} x}$

${ \sin ^{4} x} - { \sin^{2} x} ={ \sin ^{2} x}({ \sin ^{2} x} - 1)$

${ \sin ^{4} x} - { \sin^{2} x} ={ \sin ^{2} x} \times - (1 - { \sin ^{2} x})$

${ \sin ^{4} x} - { \sin^{2} x} =({1 - \cos^{2} x} )\times - ({ \cos^{2} x})$

${ \sin ^{4} x} - { \sin^{2} x} =({ \cos^{2} x} - 1 )\times ({ \cos^{2} x})$

We now expand the right hand side to get:

${ \sin ^{4} x} - { \sin^{2} x} = { \cos ^{4} x} - { \cos^{2} x}$

5 0

3 years ago

Explain and Show work so I can understand

Juliette [100K]

Answer:

length of hypotenuse = 10 ft.

Step-by-step explanation:

by pythagorus theorem,

$h {}^{2} = b {}^{2} + p {}^{2}$

( where, h = hypotenuse, b = base , h = height )

so,

=》

$c {}^{2} = 6 {}^{2} + 8 {}^{2}$

=》

$c {}^{2} = 36 + 64$

=》

$c {}^{2} { = 100}^{}$

=》

$c = \sqrt{100}$

=》

$c = 10$

hence, hypotenuse = the 10 feet.

i hope it helped.....

3 0

3 years ago

HELP ME I AM TIMES 100 points and brainy just hep me please please

elena-14-01-66 [18.8K]

Answer:

Step-by-step explanation:

If a given triangle is a right triangle, then the Pythagorean Theorem applies. The triangle in this description has side lengths 14, 29 and 37 km. We must determine whether or not

14^2 + 29^2 = 37^2 is true:

196 + 841 = 1369 No, this is not true, and so no, these side lengths do not represent a right triangle.

4 0

3 years ago