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3 years ago

Keisha wants to read for 90 minutes so far she has read 30 percent over goal how much longer does she need to read

Mathematics

2 answers:

kati45 [8]3 years ago

7 0

Answer:

63 minutes

Step-by-step explanation:

First rewrite 30% as 30/100. Then multiply 30/100 by 90 to get 2,700/100. Next simplify that to 27. The last thing you have to do to get the answer is subtract 90-27 .

erastovalidia [21]3 years ago

3 0

0.30(90)
27
90-27
63
Answer: Kesha still needs to read for 63 minutes.

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Which is a factor of each term of the polynomial?<br><br> (3d2 – 10d)

nydimaria [60]

Answer:

d(3d-10)

Step-by-step explanation:

You pull out the common factor of d from both terms, and group the remaining terms inside a parenthesis.

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2 years ago

A 45 foot ladders leaning up against a building. The base of the latter is 20 feet away from the building. What is the angle of

Tatiana [17]

Answer:

The angle of elevation to the top of the building is 63.61 degrees

Step-by-step explanation:

Here, we want to calculate angle of elevation to the top of the building.

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Please check for this in the attachment.

From the diagram, we are to calculate the angle theta.

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Looking at what we have, we have the hypotenuse and the adjacent.

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3 years ago

Is sqrt(25a^2/4) the same as sqrt(25a^2)/sqrt(4)?

Evgesh-ka [11]

$LHS\\ \\ =\sqrt { \frac { 25{ a }^{ 2 } }{ 4 } } \\ \\ ={ \left( \frac { 25{ a }^{ 2 } }{ 4 } \right) }^{ \frac { 1 }{ 2 } }$

$\\ \\ =\frac { { \left( 25{ a }^{ 2 } \right) }^{ \frac { 1 }{ 2 } } }{ { 4 }^{ \frac { 1 }{ 2 } } } \\ \\ =\frac { \sqrt { 25{ a }^{ 2 } } }{ \sqrt { 4 } } \\ \\ =RHS$

6 0

3 years ago

Read 2 more answers

If the value of third order determinant is 11. Then what is the value of the determinant formed by its cofactors.

nordsb [41]

Answer:

146.41

Step-by-step explanation:

third order determinant = determinant of 3×3 matrix A

given ∣A∣=11

det (cofactor matrix of A) =set (transpare of cofactor amtrix of A) (transpare does not change the det)

=det(adjacent of A)

{det (cofactor matrix of A)} ^2 = {det (adjacent of A)} ^2

(Using for an n×n det (cofactor matrix of A)=det (A)^n−1 )

we get

det (cofactor matrix of A)^2 = {det(A) ^3−1 }^2

=(11)^2×2 = 11^4

=146.41

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3 years ago

A ________ exists between two variables when the values of one variable are somehow associated with the values of the other vari

motikmotik

Correlation would be the correct answer

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3 years ago