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3 years ago

What is the answer for 4 and 5

Mathematics

1 answer:

givi [52]3 years ago

6 0

Answer:

Step-by-step explanation:

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A circle has a diameter of 30 inches. find the circumfrence of the circle to the nearest tenth

Goshia [24]

Answer:

C≈94.25in d Diameter 30in Using the formulas C=2πr d=2r Solving forC C=πd=π·30≈94.24778in

8 0

2 years ago

Read 2 more answers

Janelle has 5 hours to spend training for an upcoming race. She completes her training by running full speed the distance of the

VikaD [51]

Answer:

The distance cover by him walking back is 11.25 miles

Step-by-step explanation:

Given as :

Time for Janelle to spend on training = 5 hours

The running speed of Janelle = 9 mph

The walking back with 3 mph

Let The distance for running and walking is same i.e D miles

SO, Time = $\frac{Distance}{Speed}$

∴ 5 = $\frac{D}{9}$ + $\frac{D}{3}$

Or, 5 × 9 = D + 3 D

Or, 45 = 4 D

∴ D = $\frac{45}{4}$ = 11.25 miles

Hence The distance cover by him walking back is 11.25 miles Answer

6 0

3 years ago

Is anyone here in connections academy geometry. even if your not can someone help me with the question in the images. If correct

Inessa [10]

Answer:

$13.05cm^2$

Step-by-step explanation:

Area of a triangle is given a half the product of base by the perpendicular height:

$A=0.5bh$

Given h=9cm, and b=2.9cm, the area is calculated as:

$A=0.5bh\\\\A=0.5\times 2.9cm \times 9cm\\\\A=13.05cm^2\\$

Hence, area of the triangle is 13.05 sq cm

5 0

3 years ago

For what value of x is PQ || BC?<br> A 5<br> B. 6<br> C. 7<br> D. 8

Dahasolnce [82]

Answer:

C. 7

Step-by-step explanation:

$In\: \triangle ABC\\\overline{PQ} \parallel \overline {BC}.. (given) \\$

Therefore, by Basic Proportionality theorem:

$\frac{AP}{PB} = \frac{AQ}{QC} \\\\\therefore \frac{x}{x+7} = \frac{x-3}{x+1} \\\\ \therefore \: \frac{x - x - 7}{x + 7} = \frac{x - 3 - x - 1}{x + 1} \\ (by \: dividendo) \\ \\ \frac{ - 7}{x + 7} = \frac{ - 4}{x + 1} \\ \\ \frac{7}{x + 7} = \frac{4}{x + 1} \\ \\ 7x + 7 = 4x + 28 \\ \\ 7x - 4x = 28 - 7 \\ \\ 3x = 21 \\ \\ x = \frac{21}{3} \\ \\ \huge \red{ \boxed{ x = 7}}$

5 0

3 years ago

Find an equation of the line through (3,7) and parallel to y=3x-1

iren2701 [21]

Answer:

y = 3x -2

Step-by-step explanation:

If the line is parallel, that means it has the same slope. The given equation had a slope of 3, so the new line must also have a slope of 3.

You can plug the given coordinates into the slope-intercept form with a slope of 3 to find your answer.

y = m*x + b

7 = 3*3 + b

7 = 9 + b

-2 = b

y = 3x -2

7 0

3 years ago