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irakobra [83]
3 years ago
15

Below is a series of steps Mel took to solve an equation. She got the wrong answer. Find Mel's mistake. Then, use order of opera

tions and solve for x.

Mathematics
2 answers:
hichkok12 [17]3 years ago
6 0

Answer:

x=9

Step-by-step explanation:

Inessa [10]3 years ago
3 0

Answer: x = 9

Mel's mistake was in the last step, she multiplied by 2 instead of dividing by 2

Step-by-step explanation:

2x + 1 = 19

Subtract 1 from each side

2x = 18

Divide by 2

x = 9

You might be interested in
there are two pizzas. Conor ate 1/4 of a pizza, Brandon ate 2/8, Tyler ate 3/4, and Audrey ate 4/8. who ate the most of the two
katovenus [111]
Let's say that each pizza is sliced into 8 equal sized pieces, I have to make all of the fraction have the denominator of 8.
Conor: 1/4 * 2/2 = 2/8
Tyler: 3/4 * 2/2 = 6/8
Brandon: 2/8
Audrey: 4/8
Then I'll put the fractions in order from least to greatest. 2/8, 2/8, 4/8, 6/8. Then you would have to multiply each fraction by 2 since there are two pizzas that have 8 equally sized pieces.
Brandon: 2/8 *2/2 = 4/16
Conor: 2/8 * 2/2 = 4/16
Audrey: 4/8 * 2/2 = 8/16
Tyler: 6/8 * 2/2= 12/16
This means that Tyler ate the most of the two pizzas.


4 0
3 years ago
In the figure, TS = 8, SR = 4, and QR = 2, what is the length of PQ?
Sauron [17]

Answer:

d. 22

Step-by-step explanation:

(PQ + QR) × QR = (TS + SR) × SR => two secants intersecting theorem

PQ = ?

QR = 2

TS = 8

SR = 4

Plug in the values

(PQ + 2) × 2 = (8 + 4) × 4

2PQ + 4 = 12 × 4

2PQ + 4 = 48

2PQ + 4 - 4 = 48 - 4

2PQ = 44

2PQ/2 = 44/2

PQ = 22

5 0
3 years ago
(-5)*+2+(3+1)<br> Help??
IRINA_888 [86]

Answer:

1

Step-by-step explanation:

(-5)+2+(3+1)

= -5+2+4

= -3+4

= 1

4 0
3 years ago
A triangular pyramid is formed from three right triangles as shown below.
juin [17]

Answer:

70

Step-by-step explanation:

RU=20 (45-45-90 triangle)

use pythagorean theorum

20^2+b^2=73^2

evaluate

b^2=4929

sq root both side

rounded to nearest integer, side SU is 70

8 0
3 years ago
Help I’m really bad at this
kogti [31]

Answer:

72

Step-by-step explanation:

The formula for surface area is SA = 2lw + 2wh + 2lh

W = width

L= length

H = height

A = 2(wl + hl + hw)

2·(6·3+2·3+2·6)

Simplify that down to get the answer 72

4 0
3 years ago
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