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notka56 [123]
3 years ago
12

Write a story problem for the additional sentence 7+2=9.solve the story problem.

Mathematics
1 answer:
Misha Larkins [42]3 years ago
6 0
Missy was baking a cake. She read the recipe, and it said she needed seven cups of flour. When she went back, she realized she needed to add two more. How many cups does she have now?
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Suppose that two small cities have the same longitude, which gives the east-west position of a point on Earth's surface. One has
wel

Answer:

Distance between A and B is 2672 km.

Step-by-step explanation:

Since one city B is having latitude of 23° and other town is having latitude of 47°.Radius of Earth has been given as 6380 km.

Therefore arc A from x-axis will be A = 2πr(∅/360) = 2×3.14×6380×(47/360)

= 5230.90 km

Now arc B from x-axis = 2πr(∅'/360) = 2×3.14×6380(23/360) = 2559.80 km

Therefore distance between them = 5230.9-2559.8 = 2671.9 ≅ 2672 km

Now we will rewrite the arc length formula in radians.

arc A = r×(∅×π/180)

arc A = 6380×(47×π/180) = 1665.9π

arc B = 6380×(23×π/180) = 815.22π    

Now the distance between A and B =  850.68π

6 0
3 years ago
Find the area. Simplify your answer.<br> 3x+9<br> 2x
MariettaO [177]

Answer:

We know,

Area of triangle = 1/2 * b * h

= 1/2 * 2x * 3x

= 1/2 * 6x

= 3x

Step-by-step explanation:

8 0
3 years ago
Find the area of triangle DEF with vertices D(-1,2), E(3,-2) and F(-2,-2).*
Veronika [31]

Answer:

<em>The area of the triangle DEF is 10.</em>

Step-by-step explanation:

<u>Area of a Triangle:</u>

A triangle of base B and height H (both must be perpendicular) has an area of:

\displaystyle A=\frac{BH}{2}

The image below shows the triangle formed by the points DEF. It's important to notice the points E and F lie on the same horizontal line because they both have the same y-coordinate.

This fact simplifies the calculations since we can easily compute the length the of base as the difference of their x-coordinates:

B=3-(-2)=3+2=5

Being the base of a horizontal line, the height of the triangle can be calculated as the difference of y-coordinates of D and the height of that line.

H=2-(-2)=4

With these two values, we calculate the area:

\displaystyle A=\frac{5*4}{2}=10

The area of the triangle DEF is 10.

4 0
4 years ago
Determine if the shape shown is a triangel squear rectangel or hexagon or other
jonny [76]
You can determine the shape if it is a triangle, square, rectangle, or hexagon (or other) by seeing how many sides it has.
a triangle has 3 sides.
a square has 4 sides.
a rectangle also has 4 sides.
a pentagon has 5 sides.
a hexagon has 6 sides.
8 0
3 years ago
Find the domain and range of <img src="https://tex.z-dn.net/?f=y%20%3D%20%5Cfrac%7B2x%7D%7B1%20%2B%20x%5E2%7D" id="TexFormula1"
Vinvika [58]
Hi,

Work:

Equation;

y = \frac{2x}{1 + {x}^{2} }

Root = (0, 0)
Domain: x = R
Vertical Intercept = (0, 0)

Hope this helps.
r3t40

8 0
3 years ago
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