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3 years ago

The three inside angles (A B and C) of a right angled triangle are in the ratio 7:18:11

Mathematics

1 answer:

tester [92]3 years ago

8 0

Answer:

what do the answer choices say?

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3) Which property is used in the following: 4 x (5 + 7) = 4 x 5 + 4x7

earnstyle [38]

Answer:

3) D

4) B

5) A

6) 2 (x + 7)

Step-by-step explanation:

D. Distributive Property

The distributive property of multiplication over addition can be used when you multiply a number by a sum.

B. 2 + 8 = 8 + 2

The word "commutative" comes from "commute" or "move around", so the Commutative Property is the one that refers to moving stuff around.

A. 4 x 1 = 4

The "Multiplicative Identity" is 1, because multiplying a number by 1 leaves it unchanged: a × 1 = 1 × a = a.

3 ( x + 3) - X + 5

3x + 9 - x + 5

2x + 14

2 (x + 7)

3 0

3 years ago

Use factoring to write an expression that is equivalent to 25b^16-64c^2

avanturin [10]

We can write this as the difference of squares:
(5b⁸+8c)(5b⁸-8c)

To write as the difference of squares, take the square root of each term first:
√25b¹⁶ = 5b⁸; √64c² = 8c

Now we write this as a sum in one binomial and a difference in the other:
(5b⁸+8c)(5b⁸-8c)

4 0

3 years ago

The Century club runs the concession stand during football games. They sell snacks and drinks. 50 snacks and 180 drinks will sel

katrin2010 [14]

Answer:

The cost of each drink is $1.5

Step-by-step explanation:

Let us represent

The cost of snacks = x

The cost of drinks = y

50 snacks and 180 drinks will sell for $320

Hence:

50x + 180y = 320....... Equation 1

75 snacks and 100 drinks will sell for $225.

Hence:

75x + 100y = 225....... Equation 2

Combining both Equations together

50x + 180y = 320....... Equation 1

75x + 100y = 225....... Equation 2

Multiply Equation 1 by 75 and Equation 2 by 50 to eliminate x

3750x + 13500y = 24000..... Equation 3

3750x + 5000y = 11250....... Equation 4

Subtract Equation 4 from Equation 3

8500y = 12750

y = 12750/8500

y = $1.5

Therefore, the cost of each drink is $1.5

4 0

3 years ago

Find an equation of the line having slope -2 that passes through the point (1, 5)

Alenkasestr [34]

Slope of -2, (1,5)

y = mx + b
slope(m) = -2
(1,5)...x = 1 and y = 5
now we sub and find b, the y int
5 = -2(1) + b
5 = -2 + b
5 + 2 = b
7 = b
so ur equation is : y = -2x + 7

The approximation method used to estimate a point between 2 given points is called linear interpolation. The approximation method used to estimate a point that does not lie between 2 given points is called linear extrapolation.A linear function has the form f(x) = mx + b. Its graph is a line that has slope m and y intercept at (0,b).

8 0

3 years ago

Read 2 more answers

$83 giraffe; 17% markup

Ksenya-84 [330]

Answer:

$97.11

Step-by-step explanation:

17% of $83 = $14.11

$83 + $14.11 = $97.11

3 0

3 years ago