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3 years ago

Can anyone help me with this???

Mathematics

2 answers:

serg [7]3 years ago

7 0

Answer:

my answer was wrong

Kipish [7]3 years ago

5 0

Answer:

Step-by-step explanation:

well. 4z is 4x2 which is 8 and 8 to the second power is 16.

then you take 3z or 3x2 which is 6. so now you have 16-6. but then there’s no multiplication left. you’re stuck with this: 16 - 6 - 4.

well since 16 - 6 is 10, 10 - 4 is 6.

so the value of the expression would be 6.

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Steve earns $8 per hour. His older brother earns $2 more per hour than Steve. What is the ratio of the money Steve earns in an h

Licemer1 [7]

Answer: 4:5

Explanation:

Steve earns 8 dollars an hour. His brother earns 10 dollars an hour.

The ratio is Steve:Brother, which is 8:10.

This can be treated the same was as a fraction and simplified, dividing both sides by 2, which becomes 4:5

5 0

3 years ago

Nathaniel is using the quadratic formula to solve 0 = x2 + 5x - 6. His steps are shown below.

Irina-Kira [14]

Hello,

x²+5x-6=0
Δ=5²+4*6=49=7²
x=(-5+7)/2 or x=(-5-7)2
==>x=1 or x=-6

Answer B

5 0

3 years ago

Read 2 more answers

100 POINTS!!! PLEASE HELP ASAP!!!!

Makovka662 [10]

Answer:

$\displaystyle \frac{1}{5} \\ \frac{211}{1500} \\ \frac{11}{300}$

Step-by-step explanation:

$\displaystyle \frac{1,8}{9} = 0,2 = \frac{1}{5}$

Greatest Common Divisor [GCD]: 9

$\displaystyle \frac{2,11}{15} = \frac{211}{1500}$

Greatest Common Divisor [GCD]: 1⁄100

$\displaystyle \frac{3,3}{90} = \frac{11}{300}$

Greatest Common Divisor [GCD]: 3⁄10

I am joyous to assist you.

6 0

4 years ago

AREA, PERMITER AND VOLUME QUESTIONS.

castortr0y [4]

Answer:

Step-by-step explanation:

(A) The radius of the circle is=1.8m

Then diameter will be: 2r= $2{\times}1.8=3.6 m$

Circumference of circle= ${\pi}d$ = $3.14{\times}3.6=11.304 m$

Area of the circle= ${\pi}r^{2}=3.14{\times}(1.8)^{2}=10.17 m^{2}$

(B) The area of the rectangular backboard of basketball court = 18900 $cm^{2}$

Width=180cm

Area of rectangle= l{\times}b[/tex]

18900=l{\times}180[/tex]

$l=105 cm=1.05m$

Perimeter of the seating space=2(l+b)

= $2(32.5+18.4)$

= $101.8 m$

Perimeter of the basketball court=2(l+b)

= $2(15+28)$

= $86 m$

Now, total perimeter= perimeter of the basketball court+perimeter of the seating space.

Total perimeter= $101.8+86=187.8 m$

Area of the seating space= $l{\times}b$

= $32.5{\times}18.4=598 m^{2}$

Area of 4 triangles= $4{\times}(\frac{1}{2}{\times}B{\times}H)$

= $4{\times}(\frac{1}{2}{\times}3{\times}2)=12m^{2}$

Area of the shape= Area of the square+ area of the 4 triangles

= $9+12=21m^{2}$

(D) Perimeter of rectangle with length=40 m (After converting cm to m) and breadth= 10 m is given by: $2(l+b)=2(40+10)=100 m$

Perimeter of rectangle with length 68 m and breadth=33 m is given by: $2(l+b)=2(68+33)=202 m$

Perimeter of the semicircle= $\frac{{\pi}d}{2}=\frac{3.14{\times}34}{2}=53.38 m$

Total perimeter= $100+201+53.38=355.38 m$

Area of rectangle with length=40 m (After converting cm to m) and breadth= 10 m is given by: $l{\times}b=40{\times}10=400 m^{2}$

Area of rectangle with length 68 m and breadth=33 m is given by: $l{\times}b=68{\times}33=2244 m^{2}$

Area of the semi circle= $\frac{{\pi}r^{2}}{2}=\frac{3.14{\times}17^{2}}{2}=453.73 m^{2}$

Total area= $400+2244+453.73=3097.73 m^{2}$

8 0

3 years ago

Read 2 more answers

Which shows the pre-image od quadrilateral w'x'y'z' before the figure was rotated according to the rule (x,y) -> (-x,-y)?

JulsSmile [24]

Answer:

The pre-image of the quadrilateral is attached.

Step-by-step explanation:

Each point (x, y) is rotated with the rule (x, y) -> (-x, -y).

So, point W'(2, 3) was W(-2, -3) before rotation.

X'(6, 3) was X(-6, -3)

Y'(6, 4) was Y(-6, -4).

Z'(3, 5) was Z(-3, -5).

The pre-image of the quadrilateral is attached.

4 0

4 years ago

Read 2 more answers