All categories

3 years ago

Let ƒ(x) = 5x − l and g(x) = x2 - 1. find (f ○ g)(−7)

Mathematics

1 answer:

attashe74 [19]3 years ago

4 0

Answer:

240

Step-by-step explanation:

5(x² - 1)

5 ((-7)² - 1)

5(49 - 1)

5 (48)

You might be interested in

PLEASE HELP!!!!!! IM HORRIBLE AT MATH PLEASE PLEASE PLEASE PLEASE HELP!!!!!!!!

iVinArrow [24]

Answer:

2. No, the triangles can't be proven congruent

3. yes, SAS; ΔSTV ≅ ΔSUV

4. yes, SSS; ΔNMQ ≅ ΔNPQ

5. No, the triangles can't be proven congruent

6. yes, SAS; ΔXWZ ≅ ΔXYZ

7. | Reasons |

1. | given (note this is a side) |

2. | given (note this is a side) |

3. | given |

4. | definition of a midpoint (a midpoint bisects the line it is one because it is equidistant from the two endpoints; basically, the two pieces of a line bisected by a midpoint will always be equal) |

5. | SSS Theorem (the two givens beside the midpoint were two sets of equal corresponding sides; since we have three sets of corresponding sides equal, the theorem used here is the SSS Theorem) |

Step-by-step explanation:

Here's a quick review of the two theorems mentioned in this worksheet:

Side-Side-Side Theorem: in reference to congruency, this theorem states that if the three sides of one triangle are equal to the respective sides of another triangle, then the two triangles are congruent.

What about SAS? The letters are ordered in that way for a reason: the Side-Angle-Side Theorem tells us that if we have two triangles, and a set of two corresponding sides and their included angle are equal, then the triangles are congruent.

By included angle, we mean the angle between two sides.

I know, jaelee04, I'm sorry, this explanation is a bit short, but email me and I'll send you my full answer. The warning is that it's really long!

6 0

3 years ago

Ratio of 6 nickels to 5 dollars

SSSSS [86.1K]

6:5. or 6/5 which ever way you choose

4 0

3 years ago

The diameter of a sphere is

Travka [436]

Answer: The maximum distance between two antipodal points on the surface of the sphere.

5 0

3 years ago

Pl help me to do it

mixas84 [53]

Answer:

Step-by-step explanation:

Assuming you want to find the value of n.

$\sqrt{\frac{p}{q} } =(\frac{q}{p}) ^{1-2n} \\$

Remember when bases are same exponents can be made equal

Here the bases are different

because notice on one side there is p/q and on the other q/p

what can we do to make them same?

You can invert the any side you want either make leftside as q/p or make right one as p/q

I will make left side as q/p

All you do is flip the denominator and numerator to do so. But that can only be done if you put a (-1) in the exponent

so underroot p/q means (p/q)^1/2 when i make it q/p

a negative one needs to be put in the exponent. That -1 when multiplied by 1/2 makes it -1/2

Now the bases are same such like.

$(\frac{q}{p} )^{-1/2} = (\frac{q}{p}) ^{1-2n}$

See now the bases are same, the powers can be made equal

-1/2=1-2n

here n is the variable we need to find

rearrange the equation

n=3/4

3 0

3 years ago

If the length of segment AD is 15 meters, what are the lengths of segments BC and CD?

erica [24]

Answer:

BC=5 meters CD=5 meters

Step-by-step explanation:

If you make a number line with 4 points, you can put a letter at one point. If the whole thing equals 15 meters and there are three spaces you dived 15 by 3 and get your answer.

Hope that helps!

6 0

3 years ago