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2 years ago

Simplify 2.67 + (−8.9).

Mathematics

2 answers:

Ket [755]2 years ago

8 0

Answer:

-6.23

Step-by-step explanation:

The solution will be,

→ 2.67 + (−8.9)

→ 2.67 - 8.9

→ -6.23

So, the answer is -6.23.

OlgaM077 [116]2 years ago

6 0

Answer:

-6.23 is the answer

<h2>HOPE IT'S HELPS YOU </h2>

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Solve the formula A=10+ry. solve for y

noname [10]

The given formula $A= 10 + ry$

Solve for y means we have to make y alone

$A= 10 + ry$ \\

Add -10 on both sides, we get

$A - 10 = 10 -10 + ry \\A - 10 = 0 + ryA - 10 = ry$

As there is multiplication sign between r and y so to solve for y, divide both side by r

$\frac{A - 10}{r} = y\\\\y = \frac{A - 10}{r}$

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4 years ago

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Please help 4% of 3.5km = ?

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We can first change 4% to a decimal by dividing by 100:

$\frac{4}{100}=0.04$

Then we can multiply this by 3.5km:

$0.04*3.5km=0.14km$

So now we know that 4% of 3.5km is 0.14km.

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4 years ago

What is the remainder when 3x^2-7x+5 is divided by x+5

Bond [772]

answer

f(-5)=115

Step-by-step explanation:

x+5=0

x=-5

f(x)=3x^2-7x+5

f(-5)=3*(-5)^2-7(-5)+5

f(-5)=3*25+35+5

f(-5)=115

5 0

3 years ago

3) Find the range of the function.

9966 [12]

Answer:

Range is (0, -5)

Step-by-step explanation:

${ \sf{f(x) = - {x}^{2} - 5}}$

when x is 0:

${ \sf{f(0) = - 5}}$

4 0

3 years ago

The circumference of a great circle of a sphere is 44π. Find the Surface Area of the sphere.

alexdok [17]

Answer:

1936 π square units

Step-by-step explanation:

Given the information:

The circumference of a great circle of a sphere is 44π.

As we know the formula used to find a circle's circumference is:

C = 2πr , where r is the radius of the circle

In this situation, we know C = 44π

<=> 2πr = 44π

<=> r = 22 units

Hence, the Surface Area of the sphere

S.A = 4π $r^{2}$

= 4π $22^{2}$

= 1936 π square units

3 0

3 years ago