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3 years ago

Twelve dogs and cats receive 77 biscuits.

Mathematics

2 answers:

Andrews [41]3 years ago

8 0

Answer:

6 dogs are there who ate the biscuits

storchak [24]3 years ago

3 0

5 dogs
7 cats 6 biscuits each they eat 42 biscuits
5 dogs 7 biscuits each will eat 35 biscuits
42 + 35 = 77
Hope this helps

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Scarlett is working two summer jobs, making $13 per hour landscaping and making $8 per hour clearing tables. In a given week, sh

dolphi86 [110]

Answer:

The graph in the attached figure

Step-by-step explanation:

Let

x ----> the number of hours landscaping

y ----> the number of hours clearing tables

we know that

she can work a maximum of 12 total

$x+y\leq 12$ ----> inequality A

she must earn a minimum of $120

$13x+8y\geq 120$ ----> inequality B

Solve the system of inequalities by graphing

The solution is the triangular shaded area

see the attached figure

Remember that

If a ordered pair is a solution of the system of inequalities, then the ordered pair must satisfy both inequalities (the ordered pair lie in the shaded area of the solution set)

One possible solution is the point (10,1)

The point (10,1) lie in the shaded area

That means

The number of hours landscaping is 10 and the number of hours clearing tables is 1

5 0

3 years ago

25×28 by distributive property

valentina_108 [34]

Answer:

700

Step-by-step explanation:

25 x 28

there is only one property and its multiplication

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3 years ago

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What is the sine trig function

8_murik_8 [283]

Answer: Sine, Cosine and Tangent (often shortened to sin, cos and tan) are each a ratio of sides of a right angled triangle:

Step-by-step explanation:

3 0

2 years ago

50℅ of what number is 7.5? Help please!!

Makovka662 [10]

Let the number be y.
so,
50% × y = 7.5
move 50% to the other side
y=7.5÷50%
therefore y=15

4 0

3 years ago

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A candy bar box is in the shape of a triangular prism. The volume of the box is 2,400 cubic centimeters. A triangular prism is s

Elena-2011 [213]

Answer:

A) 15 cm

B) 1240 cm²

Step-by-step explanation:

Part A: The height of the triangular base can be found a couple of ways. One is to use the Pythagorean theorem.

The triangular base is isosceles, so the height, half its base (8 cm) and the long edge (17 cm) form a right triangle. The height is then found from ...

17² = 8² + height²

289 -64 = height² . . . . . subtract 64

√225 = 15 = height . . . . take the square root

The height of the triangular base is 15 cm.

Part B: The volume of a prism is given by ...

V = Bh

where B is the area of the base and h is the length ("heigh") of the prism. We can use this formula to find B, the area of each of the triangular bases of the prism.

2400 cm³ = B·(20 cm)

2400 cm³/(20 cm) = B = 120 cm² . . . . . area of one end of the prism

Now the lateral area of the prism is the product of its length (20 cm) and the perimeter of its base (17 cm + 17 cm + 16 cm). That area is ...

lateral area = (20 cm)(50 cm) = 1000 cm²

Together with the areas of the two ends, we find the total area of the cardboard box to be ...

total area = lateral area + 2×base area = 1000 cm² + 2×120 cm²

total area = 1240 cm²

_____

Note that you can also find the <em>height of the base triangle</em> from the base area.

A = (1/2)bh

120 cm² = (1/2)(16 cm)h

120 cm²/(8 cm) = <em>h = 15 cm</em>

8 0

3 years ago