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2 years ago

Can someone help me with this question with details

Mathematics

1 answer:

Rufina [12.5K]2 years ago

8 0

Answer:

I think the answer is 5 ( if wrong then do a low rating)

Step-by-step explanation:

The way I found the answer was by using PEDMAS so first I handled [(4 - (-5)) x (-7)] which is the same as 4 + -5 which equals -1 and when multiplied by -7 equals positive 7 because whenever you multiply 2 negatives you get a positive.

Next I solved 6 / (-3) which is -2 since whenever a positive is divided by a negative the quotient is negative. Now the equation is:

-2 + 7 and when solved is -2 + 7 = 5

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Help find perimeter and area

klio [65]

Answer: perimeter = 96mm, Area = 564mm².

Step-by-step explanation:

From the diagram, it is a trapezium, it has a rectangle joined together by a right angled triangle. Now to find the perimeter, we add all the dimensions together. To get the other side of the rectangle, which is also the perpendicular height of the figure, we take the Pythagoras. Let the perpendicular height = x

Therefore,

25² = ×² + 7²

625 = x² + 49

x² = 625 - 49

x² = 576

x. = √576

= 24.

Now the perimeter

= 20 + 25 + 7 + 20 + 24

= 96mm.

Area of the figure will be

= 1/2( a + b )h

Where a = 20, b = 20 + 7 = 27 and h = 24, now substitute for the values

( 20 + 27) x 24

---------------------

= 47 x 24/2

= 47 x 12

= 564mm²

8 0

3 years ago

The larger number is 18 more than twice the smaller. If the sum of the two numbers is 93, find

Zigmanuir [339]

Answer:

The smaller is 25

the larger is 68

8 0

3 years ago

Someone please help :(

riadik2000 [5.3K]

Answer:

y = -0.2x + 8

Step-by-step explanation:

To write a linear function, calculate the rate of change of the gallon of water leaving the tank and the starting level.

The function will describe the number of gallons over time or (time, gallons).

This means the function has data points (1, 7.8) and (9, 6.2).

Use the rate of change or slope formula to calculate it.

$m = \frac{7.8 - 6.2}{1 - 9} =\frac{1.6}{-8} = -0.2$

This means that for the formula y = mx+b then m = -0.2.

This also means that after losing 0.2 gallons the first hour it was at 7.8. So the starting value is 8 gallons.

The equation is y = -0.2 x + 8.

5 0

3 years ago

7) What is the solution to the system of equations?

DiKsa [7]

Answer:

Step-by-step explanation:

3 0

3 years ago

Graph y < 1 – 3x<br> Need this really fast

Ivenika [448]

Answer:

Step-by-step explanation:

Hope this helps

4 0

3 years ago

Can someone help me with this question with details​

Can someone help me with this question with details