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RoseWind [281]
3 years ago
13

1+4=5 2+5=12 3+6=21 5+8=?

Mathematics
1 answer:
Korvikt [17]3 years ago
7 0
As I see it, every addition also adds the results of the last so, 34
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At the grocery store, Emily notices that it costs
Dmitriy789 [7]

Answer:

4.34

Step-by-step explanation:

2.48/40=0.062 per ounce

0.062 x 70 = 4.32 for 70 ounces

4 0
2 years ago
The vertices of a triangle are labeled clockwise A(–5, 3), B(6, 1), and C(–2, –3). How could you show that the figure is a right
mafiozo [28]

Explanation:

When the points are plotted on a graph, it is easy to see that the slope of AC is -2 and the slope of BC is 1/2. These slope values have a product of -1, so the corresponding line segments are perpendicular to each other.

___

If you have studied vectors, you can find the dot product of AC with BC:

  AC = (-5, 3) -(-2, -3) = (-3, 6)

  BC = (6, 1) -(-2, -3) = (8, 4)

The dot product is ...

  (-3, 6)·(8, 4) = (-3)(8) + (6)(4) = -24+24 = 0

When the dot product of vectors is zero, they are perpendicular.

5 0
3 years ago
What is the length of the base of a right triangle with an area of 20 m and a height of 4 m?
fenix001 [56]

Answer: 5 m

Step-by-step explanation:

height x base = area

4x=20

x=20÷4

x=5

base= 5m

4 0
2 years ago
Simplify to the lowest terms
Black_prince [1.1K]

Answer:

1/2

Step-by-step explanation:

divide the numerator & denominator by 4

4 0
3 years ago
1/2 of all animals at the shelter are dogs. 5/8 of the dogs are black.what fraction of all of the animals at the shelter are bla
Artyom0805 [142]

Answer:

5/16

Step-by-step explanation:

multiply 1/2 x 5/8

=5/16

7 0
2 years ago
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