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Savatey [412]
2 years ago
15

Help pls 70 points :’(

Mathematics
2 answers:
aleksandrvk [35]2 years ago
7 0

Answer:

7.) 18.86m

8.) 15 inches

9.) 32 and 34

10.) 21 and 29

11.) change all the decimals in the equation into fractions.

Step-by-step explanation:

Flauer [41]2 years ago
3 0

Answer:

18.86m

15 inches

32 and 34

21 and 29

change all the decimals in the equation into fractions.

Step-by-step explanation:

OMG WHY I AM SO F LATE

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Use the distributive property to simplify 3 + 5c(2 + 6c) completely.​
Charra [1.4K]

Answer:

Distributive property says that:

(A + B)*C = A*C + B*C

Now let's try to use it in our expression:

3 + 5*c*(2 + 6*c)

Here we can take the two terms inside the parentheses as A and B, and the term that multiplies them as C, then distributing we get:

3 + (5*c)*2 + (5*c)*(6*c)

Now remember that the multiplications are associative and commutative, then we can write this as:

3 + (2*5)*c + (5*6)*(c*c)

3 + 10*c + 30*c^2

And we can't simplify it anymore.

7 0
3 years ago
A swimming pool is filled with water by using two taps A and B. Alone, it takes tap A 3 hours less than B to fill the same pool.
iris [78.8K]

Answer:

Tap A 3hrs

Tap B 6hrs

Step-by-step explanation:

Let the volume of the swimming pool be Xm^3.

Now, to get the appropriate volume, we know we need to multiply the rate by the time. Let the rate of the taps be R1 and R2 respectively, while the time taken to fill the swimming pool be Ta and Tb respectively.

x/Ta= Ra

x/Tb= Rb

X/(Ra + Rb)= 2

Ta = Tb - 3

From equation 2:

X = 2( Ra + Rb)

Substituting the values of Ra and Rb Using the first set of equations

X = 2( x/Ta + x/Tb)

But Ta = Tb - 3

1/2 = 1/(Tb - 3)+ 1/Tb

0.5 = (Tb + Tb-3)/Tb(Tb - 3)

At this juncture let’s say Tb = y

0.5 = (2y - 3)/y(y - 3)

y(y-3 ) = 4y - 6

y^2 -3y - 4y + 6 = 0

y^2 -7y + 6= 0

Solving the quadratic equation, we get y =

y = Tb = 6hrs or 1hr

We remove one hour as we know that Tap A takes 3hrs left than tap B and there is nothing like negative hours

Now, we get Ta by Tb -3 = 6 - 3 = 3hrs

5 0
3 years ago
Lois and Joe start saving pennies on new years day. Lois has 5 pennies and saves 2 pennies every day. Joe starts with 4 pennies
Mazyrski [523]
Well Your answer is 32 beacuse if lois has 5 pennies and saves 2 and joe start with 4 pennies and saves 6. well what i do first is 2 over 5 and then i do 4 over 6 and then i multiply 5 and 6 and then it 30 and that goes on the bottom and then i multiply 2×6 =12 and then i multiply 4×5=20 so i add both answer and it get me 30 that your answer
4 0
3 years ago
Tammy says the quotient of 793 ÷ 6 is 132 r1. Use multiplication to check Tammy's answer. × 6 + 1 = Tammy's answer is .
Troyanec [42]

To find the answer, we should multiply 132 by 6.

132*6=792

792+1=793

Tammy’s answer is correct.

7 0
3 years ago
2<br> If = 9 and 3p = x, what is the value of 4p?<br> A) 6<br> B) 12<br> C) 18<br> D) 24
ValentinkaMS [17]

Answer:

The question needs to rewritten

if=9 and 3p=x

assuming then 12 B

Step-by-step explanation:

7 0
3 years ago
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