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dlinn [17]
3 years ago
5

Evaluate the expression if a= -5 and b=-2. a + 3b A:4 B:1 C:11 D: -11

Mathematics
2 answers:
yuradex [85]3 years ago
5 0

Answer:

D.-11

Step-by-step explanation:

krek1111 [17]3 years ago
5 0

Answer:

it is C

Step-by-step explanation:

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A frog is climbing out of a well that is 11 feet deep. The frog can climb 3 feet per hour but then it rests for an hour, during
Dimas [21]

Answer:

It takes the frog 7 hours to get out of the well.

Step-by-step explanation:

We know that the well is 11 feet deep and the frog can climb 3 feet per hour.

Each time it climbs, it rests for an hour, and decreases its height by 1 foot.

So, if the frog reaches 3 feet in the first hour, then in the next hour it is 2 feet.

Lets calculate with the same pattern:

1st hour: 3 feet

2nd hour: 3-1=2 feet

3rd hour: 2+3=5 feet

4th hour: 5-1=4 feet

5th hour: 4 +3= 7 feet

6th hour: 7-1=6 feet

5th hour: 6+3=9 feet

6th hour: 9-1=8 feet

7th hour:  8+3= 11 feet

Therefore, it takes the frog 7 hours to get out of the well.

4 0
3 years ago
Which is the graph of f(x) = -(x + 3)(x + 1)?
Bas_tet [7]

Answer:

See attachment

Step-by-step explanation:

A function is given to us and we need to tell which graph represents the given function. The function given to us is,

\tt: \implies f(x) = -( x + 3 )( x + 1 )

Let's find out at which points do the graph Intersects x axis / finding the roots. For that substitute f(x) = 0 , we have ,

\tt: \implies  -(x +3)( x + 1 ) = 0

Equate each factor by 0 ,

\tt: \implies \boxed{\blue{ \tt x = -1,-3 }}

Therefore the graph will intersect x axis at x is equal to -1 and x is equal to -3 .

On looking at the given graphs in the options the second graph intersects x axis at -1 and -3 .

<u>Hence</u><u> </u><u>the </u><u>second</u><u> </u><u>option</u><u> </u><u>is </u><u>correct</u><u> </u><u>.</u><u> </u>

{ See attachment }

4 0
3 years ago
-3 x 2(4-18) + 8 =<br> Solve the equation
Karolina [17]

we are given

-3 x 2(4-18) + 8 =

Firstly , we will solve inside parenthesis

-3 *2(4-18) + 8 =

-3 *2*-14 + 8 =

now, we can multiply

-6*-14 + 8 =

84 + 8 =

=92............Answer

6 0
3 years ago
Read 2 more answers
CAN SOMEONE PLZ HELP ME WITH THIS ONE
elena-14-01-66 [18.8K]

Answer:

i dont know

Step-by-step explanation:

8 0
3 years ago
When Mr. Key made a chocolate milkshake for himself, he used 3/4 cup
icang [17]

Answer:

3 cups of milk

Step-by-step explanation:

4/4 is 1 cup.

8 0
3 years ago
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