All categories

3 years ago

I know the answer but I need to explain how to get the answer. Please help❤️

Mathematics

1 answer:

kondaur [170]3 years ago

5 0

Answer:

730, 735, 740

Step-by-step explanation:

Let the three consecutive multiples of 5 be, x, x+5 and x+10

Given,

x + x+5 + x+10 = 2205

3x + 15 = 2205

Subtract 15 from both sides,

3x = 2205 - 15

3x = 2190

Divide both sides by 3,

x = 2190/3 = 730

So, x= 730

x+5 = 735

x+10 = 740

You might be interested in

Find the measure of each angle in degrees and radians part 2

melamori03 [73]

Left) 4×pi-2×pi/3=10×pi/3 (rad)

720-120=600⁰

Right) 2×pi (rad)

360⁰

4 0

3 years ago

Marcus used a calculator to evaluate 54 ÷ 6 + 3 × 2 by entering

fiasKO [112]

Answer:

Step-by-step explanation:

The calculator is actually correct because he entered division before addition.

Following the Bodmas rule of

B= Brackets O= Off D= Division M= Multiplication A= Addition S= Substraction

And from the question 56÷6 + 3 x 2, when bodmas is applied here it becomes ; (56÷6) +( 3 x2)

And when brackets is removed , it becomes

9+6 = 15.

7 0

4 years ago

Jason has x nickels and y dimes. He has no less than 15 coins worth a maximum of $1 combined. Solve this system of inequalities

Juli2301 [7.4K]

Answer:

x + y > 15

10x + 5y < 100

we will put it in terms of y

y > 15 - x

and

5y < 100 - 10x

y < 20 - 2x

-TheUnknownScientist

4 0

3 years ago

Select the two values of x that are roots of this equation. X2 + 2x - 5 = 0

LenaWriter [7]

Answer:

$x=-1+\sqrt{6 }$

$x=-1-\sqrt{6 }$

Step-by-step explanation:

$x=\frac{-b±\sqrt{b^{2}-4ac } }{2a}$

Ignore the A before the ±. It wouldn't let me type it correctly.

x² + 2x - 5 = 0

a = 1

b = 2

c = - 5

$x=\frac{-2±\sqrt{2^{2}-4((1)(-5)) } }{2(1)}$

$x=\frac{-2±\sqrt{4-4((1)(-5)) } }{2(1)}$

$x=\frac{-2±\sqrt{4+20 } }{2(1)}$

$x=\frac{-2±\sqrt{24 } }{2}$

$x=\frac{-2±\sqrt{(2)(12) } }{2}$

$x=\frac{-2±\sqrt{(2)(2)(6) } }{2}$

$x=\frac{-2±\sqrt{(2)(2)(2)(3) } }{2}$

$x=\frac{-2±(\sqrt{2} )(\sqrt{2})(\sqrt{(2)(3) )} }{2}$

$x=\frac{-2±2\sqrt{6 } }{2}$

Two separate equations

$x=\frac{-2+2\sqrt{6 } }{2}$

$x=\frac{-2-2\sqrt{6 } }{2}$

$x=-1+\sqrt{6 }$

$x=-1-\sqrt{6 }$

7 0

3 years ago

A blender was originally sold for $90 and has been marked down to $79.20. What is the percentage of discount for the blender

attashe74 [19]

Answer:

12%

Step-by-step explanation:

Percentage discount

$= \frac{discount}{original \: price} \times 100\% \\ = \frac{90 - 79.20}{90} \times 100\% \\ = 12\%$

☆ Discount= original price -marked price

5 0

3 years ago