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3 years ago

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Write an equation with the solution x=25.The equation should have the variable on both sides,a decimal coefficient on the left s

ide,and a decimal anywhere on the right side.One of the decimals should be written in tenths, other in hundredths.

1 answer:

Stella [2.4K]3 years ago

7 0

X=25 and u would add 5x to both sides 6x=25+5x then u would multiply both sides by 0.25 making it 1.5x=6.25+1.25x

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What number between 35 and 40 has only one and itself as factors?

Sonbull [250]

Answer:

37

Step-by-step explanation:

You're looking for a prime number.

6 0

3 years ago

Read 2 more answers

The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the e

gizmo_the_mogwai [7]

Answer:

The large sample n = 1713.96

Step-by-step explanation:

<u>Explanation</u>:-

given the population proportion was estimated to be 0.22

population proportion (P) = 0.22

The 95 % level of significance = 1.96≅ 2

The margin of error = 0.02

The formula of margin error

$\frac{2\sqrt{p(1-p)} }{\sqrt{n} } = 0.02$ … ( i )

Substitute 'p' values in equation (1)

$\frac{2\sqrt{0.22(1-0.22)} }{\sqrt{n} } = 0.02$

cross multiplication and simplification, we get

$2X0.414= 0.02 \sqrt{n}$

$\frac{2X0.414}{0.02} = \sqrt{n}$

$41.4 = \sqrt{n}$

squaring on both sides, we get

the large sample n = 1713.96

7 0

2 years ago

Plz help me toofree your my only hope

grandymaker [24]

Area of a circle = πr²

Area of a circle = 3.14 x 11² = 379.94 in²

Area painted in blue = 379.94 ÷ 2 = 189.97 in²

Area painted in purple = 189.97 in²

--------------------------
Answer: 189.97 in²
--------------------------

4 0

2 years ago

Find the area of the shaded regions. Give your answer as a completely simplified exact value in terms of π (no approximations).

Alla [95]

Area of shaded region is 18π square unit.

<u>Step-by-step explanation:</u>

Given :- A circle with center O and radius 9 cm

To Find :- area of shaded region that is area of ABC

Solution : - BC = 9 cm

∠ABC = 80° = Ф

so, area of sector = πr²Ф / 360°

= (π×9×9×80) /360°

= 18π square unit

hence, area of shaded region is 18π square unit

7 0

3 years ago

Which expression is equal to (−12−2i)+(2+2i)?

Step2247 [10]

(-12 - 2i) + (2 + 2i)
= -12 - 2i + 2 + 2i
= -12 + 2 - 2i + 2i
= -10

Answer: -10

6 0

3 years ago