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2 years ago

10

Juan was presented with the following problem on a math test: "Divide 3/4 by 5/7 Show your work" His work is shown below. What w

as Juan's erroer? Correct his work and state the correct quotient.

2 answers:

nignag [31]2 years ago

8 0

Answer:

0.952381

Step-by-step explanation:

Juan forgot to simplify 20/21 when he got his answer and was supposed to round to the nearest 6 decimals places and when he simplify it, it was supposed to be written in decimal form

mote1985 [20]2 years ago

3 0

Answer:

His mistake was that he accidently did 5/7 divided by 3/4 instead of 3/4 divided by 5/7

the real answer is 21/20

Step-by-step explanation:

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Write the equation of the function whose graph is shown. y = (x + )2 +

Deffense [45]

Quadratic form is given in the form
$y= ax^{2}+bx+c$ , where a, b, and c are constants

We substitute the value (8, 12) and (5,3) in turn

$12= a(8)^{2}+b(8)+c$
$12=64a+8b+c$ ... Equation 1

$3=a(5)^{2}+b(5)+c$
$3=25a+5b+c$ ... Equation 2

Equation 1 - Equation 2 gives
$39a+3b=9$ , we call this Equation 3

We also know that (5, 3) is the turning point of the curve, where the value of $x$ is given by $x=- \frac{b}{2a}$
Substitute $x=5$
$5=- \frac{b}{2a}$
$10a=-b$
$b=-10a$ ... Equation 4

Substitute Equation 4 into Equation 3
$39a+3b=9$
$39a+3(-10a)=9$
$39a-30a=9$
$9a=9$
$a=1$

Now we need to work out the value of $b$ and $c$

Substitute $a=1$ back into equation 4
$-10a=b$
$-10(1)=b$
$b=-10$

Substitute $a=1$ and $b=-10$ into either equation 1 or equation 2

$64a+8b+c=12$
$64(1)+8(-10)+c=12$
$64-80+c=12$
$c=12+80-64$
$c=28$

Hence the equation of the quadratic curve is
$y= x^{2} 10x+28$

8 0

3 years ago

Read 2 more answers

The marked price of

Tju [1.3M]

Answer:

MP = Rs. 1500

SP = Rs. 1230

Step-by-step explanation:

Let the Cost Price (CP) be x

<u>Then Market Price (MP):</u>

MP = x+ 20% = 1.2x

<u>Discounted Selling Price (SP):</u>

SP = MP - 18% = 0.82*1.2x = 0.984x

<u>Since the difference between CP and SP is Rs.20:</u>

x - 0.984x = 20
0.016x = 20
x= 20/0.016
x = 1250

<u>Then:</u>

MP = 1.2*1250= Rs. 1500

and

SP = 1500*0.82 = Rs. 1230

3 0

3 years ago

How do I solve this? (Geometry)

Luden [163]

Answer:

Step-by-step explanation:

(3×10×8)÷26400= 0.00909090909

hope it helps

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3 years ago

Most dietitians recommend that adults consume 20 to 30 percent of their daily caloric intake in protein. Based on this recommend

labwork [276]

Answer:

360-540 calories

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3 years ago

1) Order the animals by sleep time from least to greatest.

Zolol [24]

The way to line the animals is to put them in order going down. 0.433 56.3% 19/40 65.8%. Then you try to figure out what you need to convert so that you can get your answer. 56.3% changes to 0.563 because you move the decimal two places to the left. 65.8% changes to 0.658 and 19/40 is 0.475. 0.433 0.563 0.475 0.658. Now you compare each row to figure them out. When you do that your answer will be 0.433, 0.475, 0.563, and 0.658. I sleep about 9/24 of the day which is 0.375 and I will fit right befor 0.433.

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3 years ago