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3 years ago

Which statement compares the shape of the dot plots?

Mathematics

2 answers:

Allushta [10]3 years ago

5 0

Answer:

Answer: C - Only the fifth-grade data points are distributed fairly evenly.

Step-by-step explanation:

Just took the test and that is the right answer.

lidiya [134]3 years ago

3 0

Answer:

its C Only the fifth-grade data points are distributed fairly evenly.

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Find the area of circle having circumference 8π^2.

Dmitriy789 [7]

Answer:

496.6

Step-by-step explanation:

circumference of circle=8pie^2

2*pie*r=8*pie^2

2*r=8*pie

2r=8*22/7

r=176/7÷2

r=12.57

Area of circle=pie*r^2

=22/7*12.57^2

=22/7*158

=496.6

6 0

3 years ago

Solve the quadratic equation:

Umnica [9.8K]

Answer:

Step-by-step explanation:

$x^2+7x+10=0\qquad\implies\quad a=1\,,\ b=7\,,\ c=10\\\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}=\dfrac{-7\pm\sqrt{7^2-4(1)(10)}}{2(1)}=\dfrac{-7\pm\sqrt{49-40}}{2}=\dfrac{-7\pm\sqrt9}{2}\\\\ x_1=\dfrac{-7+3}2=\dfrac{-4}2=-2\,,\qquad x_1=\dfrac{-7-3}2=\dfrac{-10}2=-5$

7 0

3 years ago

The following figure is made of six semicircles with the same diameter, and of four congruent equilateral triangles represented

Oxana [17]

6 semicircles = 3 circles

The formula of the area of a equilateral triangle:

$A_\triangle=\dfrac{a^2\sqrt3}{4}$

We have a = |AE| = 3cm. Substitute:

$A_\triangle=\dfrac{3^2\sqrt3}{4}=\dfrac{9\sqrt3}{4}\ cm^2$

The formula of the area of a circle:

$A_O=\pi r^2$

We have 2r = |AE| =3cm → r = 1.5cm. Substitute:

$A_O=\pi\cdot1.5^2=2.25\pi\ cm^2$

The area of the figure:

$A=4A_\triangle+3A_O\\\\A=4\cdot\dfrac{9\sqrt3}{4}+3\cdot2.25\pi=9\sqrt3+6.75\pi=6\dfrac{3}{4}\pi+9\sqrt3\\\\=\dfrac{27}{4}\pi+\dfrac{36\sqrt3}{4}=\dfrac{9}{4}\cdot3\pi+\dfrac{9}{4}\cdot4\sqrt3=\dfrac{9}{4}(3\pi+4\sqrt3)\ cm^2$

7 0

3 years ago

Gina went for a fun dinner at Sally's Savory Seafood with some friends. The bill

snow_tiger [21]

Answer: Tip- $9.16

Total bill will be $57.82

Step-by-step explanation:

Bill before tax is $45.80

6.25% sales tax implies 6.25/100 x 45.80= $2.86

20% tip = 20/100 x $45.80 = $9.16

Total bill is therefore $45.80+ $2.86+ $9.16

5 0

4 years ago

Could someone help I’m so confused

oksano4ka [1.4K]

Answer:

6/4

Step-by-step explanation:

ratio of x to y is the slope so

you can use butterfly method/cross multiply (multiply numerator on one side to the denominator on the other to bring all the terms up and then solve for y)

4(y+3)=6(x+2)

4y+12=6x+12

y=6/4x

so it would be 6/4

4 0

3 years ago