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andreyandreev [35.5K]
3 years ago
13

Another math question I couldn't figure out.

Mathematics
1 answer:
Grace [21]3 years ago
7 0

I believe the answer is 764.90. 3% of 700 is 21, then add that to 700- have three percent of that- add it to the 721, find 3% of that, then three percent of that then add that to 700 :)

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Last Tuesday was silly hat day at Molly's school. 90 students wore a silly hat and 810
Elan Coil [88]
There are a total of 900 students at Molly’s school. 810 is 90% of 900. 90% of students did not wear a silly hat.
5 0
2 years ago
Which equation represents the relationship between x and y shown in the table?
Hunter-Best [27]

Answer:

y=2x-3

Explanation:

which equation represents the relationship between x and y shown in the table?

x | y

2 | 1

4 | 5

6 | 9

8 | 13

take a look at the values in the table one more,

we find the gradient of the line to be

G=y2-y1/(x2-x1)

G=13-1/(8-2)

slope/gradient=12/6

m=2

from equation of a line graph, we know

y=mx+c

m=gradient

c=intercept

y=vertical axis

x=a point on the horizontal axis

y=2x+c

when x=6, y=9

9=2(6)+C

c=-3

Therefore the equation becomes

y=2x-3

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Prove algebraically that the recurring decimal 0.72 =8/11
miskamm [114]

Answer:

see explanation

Step-by-step explanation:

We require 2 equations with the recurring decimal placed after the decimal point.

let x = 0.7272.... (1) ← multiply both sides by 100

100x = 72.7272... (2)

Subtract (1) from (2) thus eliminating the recurring decimal

99x = 72 ( divide both sides by 99 )

x = \frac{72}{99} = \frac{8}{11}

7 0
3 years ago
Read 2 more answers
Find the Sum of two consecutive odd numbers plus eighteen is 170
puteri [66]

Answer:

75, 77

Step-by-step explanation:

Let the first odd number = 2x -1

Let the second odd number = 2x + 1

2x - 1 + 2x + 1 + 18 = 170           Combine like terms on the left.

4x + 18 = 170                             Subtract 18 from both sides.

4x = 170 - 18                             Combine like terms on the right

4x = 152                                     Divide by 4

4x/4 = 152/4

x = 38

2 * 38 - 1 = 75

2 * 38 + 1 = 77

4 0
2 years ago
Y= 3/8 (x+4) SOLVE FOR X<br><br> Please show your work. I'm really confused about this.
Lemur [1.5K]

\dfrac{3}{8}(x+4)=y\ \ \ \ |\text{multiply both sides by 8}\\\\3(x+4)=8y\ \ \ \ |\text{use distributive property}\\\\(3)(x)+(3)(4)=8y\\\\3x+12=8y\ \ \ \ |\text{substract 12 from both sides}\\\\3x=8y-12\ \ \ \ |\text{divide both sides by 3}\\\\\boxed{x=\dfrac{8y-12}{3}\to y=\dfrac{8}{3}y-4}

6 0
3 years ago
Read 2 more answers
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