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yawa3891 [41]
3 years ago
15

Jenny solved the equation 1-(2x+4)=-4x+5 what her error

Mathematics
1 answer:
viva [34]3 years ago
7 0

Step-by-step explanation:

1-(2x+4)= 1-2x-4= -2x-3

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What is the simplet form of 7<br> —<br> 12?
inysia [295]

Answer:

-5

Step-by-step explanation:

7−12

=7−12

=7+−12

=−5

6 0
3 years ago
Niko wants to buy a bicycle that costs $145. He has already saved $25. He says that he can determine the amount he still needs t
nevsk [136]
145 - 25 = b
b = 120
4 0
3 years ago
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On a certain hot summer day, 673 people used the public swimming pool. The daily prices are 1.75 for children and 2.00 for adult
amid [387]

Answer:

Number of children = 386

Number of adults = 287

Step-by-step explanation:

Let

x = number of children

y = number of adults

x + y = 673 (1)

1.75x + 2y = 1249.50 (2)

From (1)

x = 673 - y

Substitute x = 673 - y into (2)

1.75x + 2y = 1249.50

1.75(673 - y) + 2y = 1249.50

1177.75 - 1.75y + 2y = 1249.50

- 1.75y + 2y = 1249.50 - 1177.75

0.25y = 71.75

y = 71.75/0.25

y = 287

Substitute y = 287 into (1)

x + y = 673

x + 287 = 673

x = 673 - 287

x = 386

Number of children = 386

Number of adults = 287

3 0
3 years ago
What does this equal to?
lesantik [10]

Answer:

x = 14

y = 7

z = 22

Step-by-step explanation:

x = # of cucumbers

y = # zucchini

z = # tomatoes

x + y + z = 43

2y = x  or  y = x/2

x + 8 = z

x + x/2 + x + 8 = 43

2x + x/2 = 35

4x + x = 70

5x = 70

x = 14

2y = 14

y = 7

14 + 8 = z

z = 22

Check if these variables are right:

14 + 7 + 22 = 43 ✔️

6 0
2 years ago
Ten of 16 students in Nyack's class are girls. His teacher selected two
viktelen [127]

I can't understand this after "happening is" but let's do it unaided.

The number of ways to draw a boy first is 6.

Given that, the number of ways to draw a girl next is 10.

That's out of a total of 16 x 15 length two permutations of 16 things

p = \dfrac{6 \times 10}{16(15)} = 1/4

Answer: 1/4

7 0
3 years ago
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