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Softa [21]
3 years ago
10

16/ 1/2 - |-4| = 8+3

Mathematics
1 answer:
alina1380 [7]3 years ago
3 0

False statement because the right side doesn't equal the left side .  32-4=11 so now  28=11 Not true

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PLS HURRY WILL GIVE BRAINLIEST
atroni [7]

Answer:

No

Step-by-step explanation:

For it to be a right triangle it would have to be 90 degrees for one side

3 0
3 years ago
Find the gradient of the line segment between the points (-2,2) and (0,6).<br> I
liberstina [14]

Answer:

rise 4, run -2. the gradiant is 2

Step-by-step explanation:

(X1,Y1)___(X2,Y2)

 |   |             |     |

(-2,2)_____(0,6)

X1-X2, Y1-Y2.

-2-0= -2= (-2,_)

2-6= 4= (_,4)

(-2,4)

3 0
3 years ago
The figure below shows a rectangle ABCD having diagonals AC and DB. ​
Keith_Richards [23]

Answer:  b) ΔADC ≡ ΔBCD by SAS

<u>Step-by-step explanation:</u>

Step 1: AD = BC                     SIDES are congruent

Step 2: ∠ADC ≡ ∠BCD          ANGLES are congruent

Step 3: DC = DC                    SIDES are congruent

The proof is using Side-Angle-Side (SAS)

Look at the angles in step 2.  These are the triangles you are proving congruency for: ΔADC ≡ ΔBCD

4 0
3 years ago
What is the final amount if 1235 is increased by 4% followed by a 4% decrease?
madam [21]

Answer:

1233.02 to 2 D.P.

Step-by-step explanation:

4 % = 0.04

So to obtain the amount after increase by 4% we multiply by 1.04:

1235 * 1.04 = 1284.4

Decreasing by 4%:  we mutriply by 1 - 0.04 = 0.96:

1284.4 * 0.96

= 1233.024.

4 0
3 years ago
Read 2 more answers
1. The mechanics at Lincoln Automotive are reborning a 6 in deep cylinder to fit a new piston. The machine they are using increa
Firdavs [7]

Answer:

0.0239\frac{in^{3}}{min}

Step-by-step explanation:

In order to solve this problem, we must start by drawing a diagram of the cylinder. (See attached picture)

This diagram will help us visualize the problem better.

So we start by determining what data we already know:

Height=6in

Diameter=3.8in

Radius = 1.9 in (because the radius is half the length of the diameter)

The problem also states that the radius will increase on thousandth of an inch every 3 minutes. We can find the velocity at which the radius is increasing with this data:

r'=\frac{1/1000in}{3min}

which yields:

r'=\frac{1}{3000}\frac{in}{min}

with this information we can start solving the problem.

First, the problem wants us to know how fast the volume is increasing, so in order to find that we need to start with the volume formula for a cylinder, which is:

V=\pi r^{2}h

where V is the volumen, r is the radius, h is the height and π is a mathematical constant equal approximately to 3.1416.

Now, the height of the cylinder will not change at any time during the reborning, so we can directly substitute the provided height, so we get:

V=\pi r^{2}(6)

or

V=6 \pi r^{2}

We can now take the derivative to this formula so we get:

\frac{dV}{dt}=2(6)\pi r \frac{dr}{dt}

Which simplifies to:

\frac{dV}{dt}=12\pi r \frac{dr}{dt}

We can now substitute the data provided by the problem to get:

\frac{dV}{dt}=12\pi (1.9) (\frac{1}{3000})

which yields:

\frac{dV}{dt}=0.0239\frac{in^{3}}{min}

3 0
3 years ago
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