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netineya [11]
3 years ago
9

the next Science test will have 50 questions.How many questions does Julia need to answer correctly to recieve a score of 90%

Mathematics
2 answers:
andrezito [222]3 years ago
5 0
She will have to answer 45 questions right because if you multiply 50×.90. You will get 45, so she can only get 5 questions wrong.
Katarina [22]3 years ago
3 0
Julie will need to answer 45 questions correctly to receive a score of 90%
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Please help me with my question!!
guapka [62]

Answer:

Step-by-step explanation:

Area of triangle = (1/2)bh

                          =\frac{1}{2}*25*21.65\\\\

                          = 270.625 cm²

Area of 6 triangles = 6 * 270.625

                              = 1623.75 cm²

Trapezium:

a = 25 cm

b = 25 +  12.5 +12.5 = 50 cm

h = 21.65 cm

Area=\frac{(a+b)*h}{2}\\\\=\frac{(25+50)*21.65}{2}\\\\=\frac{75*21.65}{2}

=811.875 cm²

Area of two trapezium = 2 *811.875

                                     = 1623.75 cm²

Area of star = 1623.75 +1623.75

                  = 3247.50 cm²

8 0
4 years ago
Read 2 more answers
Help please don’t understand
SIZIF [17.4K]
Okay all the triangles equal to 180 , so you have to add the numbers that it gives you , then subtract by 180

. for example: 33+75?= 180
33+75= 108
180-108 =72
therefore your answer is 72 (for my example)
4 0
3 years ago
What times 5/8 equals 1
nydimaria [60]

Answer:

1.6

Step-by-step explanation:

5/8 = .625

1/.625 = 1.6

.625* 1.6 = 1

8 0
3 years ago
Read 2 more answers
Find the value of x.<br> 101 x +29
iVinArrow [24]

Answer:

x = 50

Step-by-step explanation:

101 + (x + 29) = 180

130 + x = 180

x = 180 - 130

x = 50

4 0
3 years ago
Read 2 more answers
A small company manufactures picnic tables. The daily fixed cost is 1,200 and the variable cost is $45 per table. How many picni
nekit [7.7K]

Using a linear function, it is found that 80 picnic tables can be produced for a total daily cost of 4,800.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

Considering the daily fixed cost of 1200 as the y-intercept, and the variable cost of 45 as the slope, the linear function for the cost of producing n picnic tables is given by:

C(n) = 1200 + 45n.

Now, we have to solve for n when C(n) = 4800, hence:

1200 + 45n = 4800

45n = 3600

n = 3600/45

n = 80.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

8 0
2 years ago
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