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4 years ago

I really need help to find this answer 15+8×3÷2

Mathematics

2 answers:

Luden [163]4 years ago

6 0

15+8=23 23x3 is 69÷2= 34.5

Andreas93 [3]4 years ago

4 0

First 8 times 3 = 24 then 24 divided by 2 = 12 last add 15 which is 27

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Helloo it's due today help need answers idk

marusya05 [52]

Be polite and maybe people will help u!

6 0

4 years ago

Read 2 more answers

Find an equation of the sphere that passes through the point (7, 1, −3) and has center (5, 6, 5).

xz_007 [3.2K]

Answer:

The equation of the sphere that passes through the point (7,1,-3) and center at (5, 6, 5) is $(x-5)^{2}+(y-6)^{2}+(z-5)^{2} = 93$ .

Step-by-step explanation:

Any sphere centered at $(h,k,s)$ in an Euclidean space with a radius $r$ is represented by the following formula:

$(x-h)^{2} +(y-k)^{2}+(z-s)^{2} =r^{2}$

If $(x,y,z) = (7,1,-3)$ and $(h,k, s) = (5,6,5)$ , the radius of the sphere is obtained:

$(7-5)^{2}+(1-6)^{2}+(-3-5)^{2} = r^{2}$

$r^{2} = 93$

$r = \sqrt{93}$

The equation of the sphere that passes through the point (7,1,-3) and center at (5, 6, 5) is $(x-5)^{2}+(y-6)^{2}+(z-5)^{2} = 93$ .

7 0

4 years ago

The circumference of the circle below is 20 cm. What is the length of AB (the minor arc)?

SOVA2 [1]

Answer: $AB=5.27\ cm$

Step-by-step explanation:

For this exercise it is important to remember that, by definition, the length of the minor arc can be calculated wih the following formula:

$arc\ length=(\frac{central\ angle}{360\°})(circumference)$

In this case , according to the data given in the exercise, you know that:

$arc\ length=AB\\\\central\ angle=95\°\\\\circumference=20\ cm$

Therefore, susbtituting those values into the formula, you get that length of AB is the following:

$AB=(\frac{95\°}{360\°})(20\ cm)\\\\AB=(\frac{191}{72})(20\ cm)\\\\AB=5.27\ cm$

4 0

3 years ago

What is the value of x? Enter your answer in the box.

Mademuasel [1]

Answer:

x=55

Step-by-step explanation:

The 3 angles of a triangle add up to 180 degrees

<A + < B + <C = 180

x + 75+ 50 = 180

x + 125 = 180

subtract 125 from each side

x = 180-125

x = 55

8 0

4 years ago

what is the slope- intercept form of the equation of the line that passes through the points (-3,2) and(1,5)

erma4kov [3.2K]

Answer:

y = $\frac{3}{4}$ x + $\frac{17}{4}$

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (- 3, 2) and (x₂, y₂ ) = (1, 5)

m = $\frac{5-2}{1+3}$ = $\frac{3}{4}$ , hence

y = $\frac{3}{4}$ x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (1, 5 ), then

5 = $\frac{3}{4}$ + c ⇒ c = 5 - $\frac{3}{4}$ = $\frac{17}{4}$

y = $\frac{3}{4}$ x + $\frac{17}{4}$ ← in slope-intercept form

6 0

3 years ago