Ask question

Ask question

All categories

3 years ago

5

When Sophia solved her equation, she got x = 7, but when she plugged 7 back into the equation, she got 3 = 9. What could this te

ll Sophia?

2 answers:

Cloud [144]3 years ago

5 0

This tells Sophia that she was wrong and probably needs to divide

uranmaximum [27]3 years ago

4 0

I suppose this can tell sofia that she solved the equation wrong and the answer is not x=7

You might be interested in

HELP!! Pls!<br> f(x)=5<br> Find f(-2)<br><br> No links!

Firlakuza [10]

Answer:

f(x)=5

f(-2)=5

5 is the answer if there is no x near the 5

8 0

4 years ago

The graphed line shown below is y = -4x - 12

Irina-Kira [14]

<h2>Answer:</h2>

$\boxed{y=-4x}$

<h2>Step-by-step explanation:</h2>

A linear equation is an equation of a line while a system of linear equations contains two or more linear equations that work together. A system of two linear equation has no any solution when the lines have the same slope. The graphed line shown in the Figure has an equation $y=-4x-12$ being the slope $m=-4$ . Thus, from the options the line that has the same slope is $y=-4x$ . Finally, these two lines have no any because they are parallel.

4 0

4 years ago

Read 2 more answers

Paha777 [63]

Answer:

The surface area of the prism is $1,664\ mm^{2}$

Step-by-step explanation:

we know that

The surface area of the triangular prism is equal to

$SA=2B+PL$

where

B is the area of the triangular face

P is the perimeter of the triangular face

L is the length of the triangular prism

<em>Find the area of the triangular face B</em>

$B=\frac{1}{2}(24)(16)= 192\ mm^{2}$

<em>Find the perimeter of the triangular face P</em>

$P=(24+20+20)= 64\ mm$

we have

$L=20\ mm$

substitute the values

$SA=2(192)+(64)(20)=1,664\ mm^{2}$

4 0

4 years ago

6 Luiz, Seth and Fran share £1440 in the ratio 3:5:7. Fran splits her share with her sister Ali in the ratio 4:1.

dalvyx [7]

Answer:

A) £1440 in the ratio of 3:5:7 is - £288: £480: £672

After Fran gives her sister Ali a share in the ratio 4:1, Fran was left with £537.60 and her sister was left with £134.40

B) Fran to Seth = £537.60: £480 → £28: £25

Step-by-step explanation:

To find 1 part of £1440 in the ratio of 3:5:7 you have to add 3+5+7= 15

Then you divide £1440 by 15 which is = £96

Next you take 96 and times it by 3 then 5 then 7 and put it in the ratio 3:5:7= £288: £480: £672

To find out how much Fran and her sister Ali end up with you have to add 4 & 1 = 5

Then divide Fran’s share, £672, by 5= £134.40

£134.40 is Ali’s share and now we need to find Fran’s by multiplying £134.40 by 4 which is= £537.60

F: A = £537.60: £134.40

As we now know Fran is left with £537.60 and we have to put that into a ratio with what Seth has. Earlier we found out that Seth has a total of £480 from the original share (£1440). If we put this knowledge into a ratio it becomes:

£537.60: £480

But we need to simplify them. So we need to change the values to whole number.

Convert any decimal numbers to integers by multiplying both sides by 101 = 10 to eliminate all, 1, decimal places. We then have: 480: 537.6 = 4800: 5376

Try to reduce the ratio further with the highest common factor (HCF). The HCF in our case is 192.

We need to divide both terms by the HCF:

4800 ÷ 192= 25

5376 ÷ 192= 28

5 0

3 years ago

Read 2 more answers

Find the quotient.

d1i1m1o1n [39]

See attached files for detailed solutions

4 0

3 years ago