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creativ13 [48]
3 years ago
14

Smiplify d equation​

Mathematics
2 answers:
Reptile [31]3 years ago
5 0
21/4

1.)Rewrite into fraction: 3/1 * 7/4
2.)Multiply: 21/4
Semmy [17]3 years ago
4 0

Answer:

\frac{21}{4}

Step-by-step explanation:

Given

3 × \frac{7}{4} ← can be expressed as

\frac{3}{1} × \frac{7}{4}

Multiply numerators/ denominators, that is

= \frac{3(7)}{1(4)}

= \frac{21}{4}

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Given the circle with the diameter of 33 cm find the area of the circle
exis [7]

Answer:

51.81 cm^2

Step-by-step explanation:

Find The Half Of 33 which is 16.5

Use The Formula For Area

A= \pi x r^2

A= 3.14 x 16.5

A= 51.81 cm^2

3 0
2 years ago
Please help!!!
Pie

Average speed = \frac{Total Distance}{Total Time}

Ishan's Speed uphill = 10mph

Time taken = 18 minutes = 18/60 = 3/10 hours

Now distance = rate × time

Distance traveled by Ishaan up hill = 10 × 3/10 = 3 miles

Now returning back home

Distance = 3 miles

Rate = 30 mph

So time taken = distance/ rate = 3/30= 1/10 hours = 1/10 ×60 = 6 minutes.

Now total distance traveled = 3 + 3 = 6 miles

Total time taken = 18 + 6 = 24 minutes = 24/60 = 2/5 hours

Average speed

= \frac{6}{0.4}

= 15 mph

Ishaan's average speed for the entire trip from home to the gift store and back is 15mph

5 0
3 years ago
PLEASE HELP... VERY URGENT... WILL GIVE BRAINLIEST!!!
lakkis [162]

Answer:

Step-by-step explanation:

a) Pythagorean theorem,

altitude² + base² = hypotenuse²

h²  + (w² - 1)² = (w² + 1)²

                    h² = (w² + 1)² - (w² - 1)²    

{Compare with (a + b)² - (a -b)² = 4ab where a =w² & b = 1}

                   h² = 4*w²*1

                   h² = 4w²

                   h=\sqrt{4w^{2}} = \sqrt{2*2*w*w} \\\\\\h = 2w

b) Area of triangle = \frac{1}{2}b*h

                               =\dfrac{1}{2}*(w^{2}-1) *2w\\\\= (w^{2}-1)*w = w^{2}*w - 1*w\\\\=w^{3}-w

c) w =2

Area of triangle = 3w = 3*2 = 6

7 0
2 years ago
PLEASE HELP ILL GIVE BRAINLIEST Sara is making a cake in a trapezoid
alukav5142 [94]

Answer:

D im not sure just my opinion

5 0
2 years ago
Can someone help me with this question it’s 7.55 x 4.5
Yuri [45]

Answer:

33.975

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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