3 years ago

Simplify 3 x (7 - 2) + 6

1 answer:

8 0

The answer is 21.

if u look at (7-2) that gives you 5 then 3x5 gives you 15 and then you add 15+6 to get your answer of 21.

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Which of the following is not a function?

neonofarm [45]

Answer:

D......................

6 0

2 years ago

What is the range of the function f(x)=5x+4 when the domain is {-2,3,5}?

jonny [76]

Answer:

f (-2)=5×-2+4

= -10+4

= -6

f (3)=5×3+4

=15+4

=19

f (5)=5×5+4

25+4

=29

7 0

2 years ago

The speed of boat in still water is 15km/hr if needs 4 more his to travel 63 km against the current of a river than it needs to

hram777 [196]

Answer:

$\frac{63}{15 - c} - \frac{63}{15 + c} = 4$

Step-by-step explanation:

The systems of equations are

Let us assume the rate of the current be c

Now actual speed against the current is (15 - c)

And, the actual speed with the current is (15 + c)

Here we applied the time formula i.e. distance by speed

Also the upstream time - downstream time = 4

Now the equations are

$\frac{63}{15 - c} - \frac{63}{15 + c} = 4$

5 0

2 years ago

If sally saves 18% of the money she has earned ($200) how much money does she have left?

Vikentia [17]

Answer:

164$

Step-by-step explanation:

18 percent of 200 is 36.

so subtract the 36 from 200 and get 164

6 0

3 years ago

Twice the difference of 3x and y increased by 5 times the sum of x and 2y

Phantasy [73]

The answer is 2(3x-y)+5(x+2y).

8 0

2 years ago