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galina1969 [7]
3 years ago
6

If the teacher assistant can grade papers in one hour and with the teacher's help they finish in 20 minutes how many minutes wou

ld it take the teacher to grade the papers?
Mathematics
1 answer:
Phantasy [73]3 years ago
6 0
It will take the teacher 1 hour
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HELP PLEASE FAST. 30 POINTS.
QveST [7]

Answer:

<em>The age of the oldest child id 7.</em>

Step-by-step explanation:

There are 5 children:

1st Child: 7 Years Old

2nd Child: 6 Years Old

3rd Child: 5 Years Old

4th Child: 4 Years Old

5th Child: 3 Years Old

<em>The ges of any two consecutive children difference is 2 years old: 1st Child and 3rd Child. </em>

Hope this helped! :-)

3 0
4 years ago
If s(x)=x-7 and t(x) =4x^2+3 which expression is equivalent to (t×s)(x)​
marshall27 [118]

Answer:

\large\boxed{(t\times s)(x)=4x^3-28x^2+3x-21}

Step-by-step explanation:

s(x)=x-7\\t(x)=4x^2+3\\\\(t\times s)(x)=t(x)\times s(x)\\\\\text{Substitute:}\\\\(t\times s)(x)=(4x^2+3)(x-7)\\\\\text{use FOIL:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\(t\times s)(x)=(4x^2)(x)+(4x^2)(-7)+(3)(x)+(3)(-7)\\\\=4x^3-28x^2+3x-21

8 0
3 years ago
Describe how the digits shift when you multiply a number by 0.1.
Dafna1 [17]

Answer:

they move one over to the left

Step-by-step explanation:

a zero is added to the number and the decimal is shifted


3 0
3 years ago
The ratio of orange juice to pinapple jucie in tropical treat punch is 4 to 3. Bill has 64oz of orange juice. How many pineapple
iogann1982 [59]

We are given :

The ratio of orange juice to pineapple juice in tropical treat punch = 4:3 or 4/3.

Number of oz of orange juice = 64 oz.

Let us assume number of oz pineapple juice does he need = p.

We can setup an proportion:

64 : p = 4 : 3

\frac{64}{p} = \frac{4}{3}

On cross multiplication we get

64 × 3 = 4 × p

192 = 4p

Dividing both sides by 4, we get

p = 48.

<h3>Therefore, he needs 48 oz of pineapple juice.</h3>
5 0
3 years ago
Help ahhhh<br><br> brainliest for 1st answer
Gala2k [10]

Answer:

232.96

Step-by-step explanation:

18.2-12.8=5.4

12.8•12.8=163.84

5.4•12.8=69.12

163.84+69.12=232.96

6 0
3 years ago
Read 2 more answers
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