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blsea [12.9K]
3 years ago
10

Someone help me pleaseee!!

Mathematics
2 answers:
Anon25 [30]3 years ago
8 0

Answer: 4 miles

Step-by-step explanation: He starts off with $3.50 and if you do 11.50 - 3.50 you get the number 8. Then you divide 8 by 2 and you get 4.

iren [92.7K]3 years ago
4 0

Answer:

4 miles.

Step-by-step explanation:

3.50 ×4=11.50.

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Sandy works at a clothing store. She makes $7 per hour plus earns 10% commission on her sales. She worked 78 hours over the last
Gnoma [55]
What’s the question?
3 0
3 years ago
In triangle ABC, which side is the longest if these are the measures of the angles? m∠A = 60°, m∠B = (3x − 2)°, m∠C = (2x + 7)°
gogolik [260]

Answer:

AC

Step-by-step explanation:

First, let's find m∠B and m∠C by solving for x. Since the sum of interior angles in a triangle is 180°, we know that:

60 + 3x - 2 + 2x + 7 = 180

5x + 65 = 180

5x = 115

x = 23° so m∠B = 3(23) - 2 = 67° and m∠C = 2(23) + 7 = 53°. The longest side of a triangle is always opposite to the largest angle of the triangle, and since m∠B is the largest, we know that the side opposite to ∠B is the longest. That side is AC.

3 0
3 years ago
What is the length of leg y of the right triangle?<br> 84<br> 85<br> O1<br> 09<br> O 13<br> O 26
Softa [21]

Answer:

\boxed{\sf Length \ of \ leg \ y = 13}

Step-by-step explanation:

Pythagoras theorem states that <em>“In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides”</em>.

\therefore  \\  \sf \implies {84}^{2}  +  {y}^{2}  =  {85}^{2} \\  \\   \sf {84}^{2}  = 7056 : \\   \sf \implies 7056 +  {y}^{2}  =  {85}^{2} \\  \\   \sf {85}^{2}  = 7225 :  \\  \sf \implies 7056 +  {y}^{2}  = 7225 \\  \\  \sf Substract \:  7056 \:  from \:  both \:  sides : \\  \sf \implies (7056 - 7056) +  {y}^{2}  = 7225 - 7056  \\  \\  \sf 7056 - 7056 = 0 : \\   \sf \implies {y}^{2}  = 7225 - 7056 \\  \\  \sf 7225 - 7056 = 169 : \\   \sf \implies {y}^{2}  = 169 \\  \\  \sf 169 =  {13}^{2}  :  \\  \sf \implies {y}^{2}  =  {13}^{2}  \\  \\  \sf \implies y =  \sqrt{ {13}^{2} }  \\  \\  \sf \implies y =   {13}^{ \cancel{2} \times  \frac{1}{ \cancel{2}} }  \\  \\  \sf \implies y =  13

So,

Length of leg y of the right triangle = 13

5 0
3 years ago
Read 2 more answers
(sinA-cosA+1)/(sinA+cosA-1)=2(1+cosecA)​
borishaifa [10]

Answer:

The trigonometrical expression is sin² A + sin A - 2 cos A - 2 cos A × sin A = 0

Step-by-step explanation:

Given Trigonometrical function as :

\frac{sin A - cos A + 1}{sin A + cos A - 1} = 2 (1 + cosec A)

Or, \frac{sin A + ( 1 - cos A)}{sin A - (1 - cos A)} = 2 (1 + cosec A)

,<u> Now, rationalizing </u>

\frac{(sin A + ( 1 - cos A)) \times (sin A + (1 - cosA))}{(sin A - (1 - cos A))\times (sin A + (1 - cos A))} = 2 (1 + cosec A)

Or, \frac{(sin A + (1 - cos A))^{2}}{sin^{2} - (1-cos A)^{2}} = 2 ( 1 + \dfrac{1}{\textrm sinA}

Or, \frac{sin^{2}A + (1 - cosA)^{2} + 2 \times sin A \times (1 - cos A)}{sin^{2}A - (1 + cos^{2}A - 2 cos A)} = 2 ( \dfrac{1 + sin A}{sin A}

Or, \frac{sin^{2}A + 1 + cos^{2}A - 2 cos A + 2 sin A - 2 sin A cos A}{sin^{2}A - 1 - cos^{2}A +2 cos A} = 2 ( \dfrac{1 + sin A}{sin A}

Or, \frac{sin^{2}A + 1 + cos^{2}A - 2 cos A + 2 sin A - 2 sin A cos A}{sin^{2}A - (sin^{2}A + cos^{2}A) - cos^{2}A +2 cos A} = 2 ( \dfrac{1 + sin A}{sin A}

Or, \frac{2- 2 cos A + 2 sin A - 2 sin A cos A}{- 2cos^{2}A +2 cos A} =  2 ( \dfrac{1 + sin A}{sin A}

Or, \frac{1-  cos A +  sin A -  sin A cos A}{- cos^{2}A + cos A} = 2 ( \dfrac{1 + sin A}{sin A}

Or, \frac{(1-  cos A) +  sin A (1-cos A)}{cos A(1 - cos A)} = 2 ( \dfrac{1 + sin A}{sin A}

Or, \frac{(1-  cos A) (1 + sinA)}{cos A(1 - cos A)} = 2 ( \dfrac{1 + sin A}{sin A}

Or, \frac{(1 + sinA)}{(cos A)} = 2 ( \dfrac{1 + sin A}{sin A}

Or, sin A + sin² A = 2 cos A (1 + sin A)

Or,  sin A + sin² A = 2 cos A + 2 cos A × sin A

Or,   sin² A + sin A - 2 cos A - 2 cos A × sin A = 0

So,The trigonometrical expression is sin² A + sin A - 2 cos A - 2 cos A × sin A = 0     Answer

6 0
3 years ago
Find the volume of the following solid:
Nadya [2.5K]

Answer:

390cm³

Step-by-step explanation:

IF you look at the figure attached, you will see that your figure is made up of 3 rectangular prisms.

All you need to do is solve for the volume of each prism and add them up together.

The formula to use to get the volume of a rectangular prism is:

V=whl

Where:

V = Volume

w = width

l = length

h = height

Let's get the first one and double it because you have rectangular prisms with the same dimensions:

V = wlh\\\\V= (5cm)(2cm)(12cm) = 120cm^3\\\\120cm^3 \times 2=240cm^3

Next we get the rectangular prism in the middle:

Notice that the height of the side rectangular prisms is 12 cm. To get the height of the middle figure, just subtract 5cm and 2 cm from the height because they are the excess of the middle.

12cm - (5cm + 2cm)

12 cm - 7cm = 5cm

Then we plug it into the formula

V = wlh\\\\V= (5cm)(6cm)(5cm) = 150cm^3

Now that we have the volumes of all figures, just add them up together:

150cm³ + 240cm³ = 390cm³

4 0
3 years ago
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