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Mumz [18]
3 years ago
11

I- i just need help at this point...

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
5 0

Answer:

(2.8-3.5)/3.5=-.2 (100)=20%

Percent error is 20%

formula to fin percent error is ((approx-exact)/exact)(100)

Step-by-step explanation:

You might be interested in
10
natka813 [3]

Answer:

x= -8 , y = 5

x= 25/4 , y = 1/4

Step-by-step explanation:

substitute first eqn into the second eqn:

(7 - 3y)^2 -y^2 = 39

49 - 42y + 9y^2 - y^2 = 39

8y^2 - 42y +10 =0

4y^2 - 21y + 5 = 0

(4y-1) (y-5) = 0

y= 1/4 , 5

when y=1/4

x = 7- 3/4

=25/4

when y= 5

x = 7- 15

= -8

5 0
3 years ago
Read 2 more answers
Write 0.87 as a fraction in simplest form.
TEA [102]
Write the decimal number as a fraction
(over 1)
0.87 = 0.87 / 1

Multiplying by 1 to eliminate 2 decimal places
we multiply top and bottom by 2 10's

Numerator (N)
N = 0.87 × 10 × 10 = 87
Denominator (D)
D = 1 × 10 × 10 = 100

N / D = 87 / 100

Simplifying our fraction

= 87/100

<span>= 87/100</span>
8 0
3 years ago
Write the expression that shows 3 time the sixth power of 10
77julia77 [94]
3 x 10^6

Shouldn't be too hard for ya ;)
8 0
3 years ago
Input variable:<br>Output variable:​
vovangra [49]

Answer:

A variable is an input variable if its Input property is Yes. Its value can be input from an external source, such as an Architect call flow. A variable whose Output property is Yes is an output variable.Since both properties can be set to yes, a variable can be both an input variable and an output variable.

Step-by-step explanation:

4 0
3 years ago
If you have a set of alternate exterior angles on parallel lines, then the measure will be equal
Luba_88 [7]
Always.
So it is B.
Hope This Helps
5 0
2 years ago
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