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4 years ago

Solve this please with an explanation of process your finding the values of x and y

Mathematics

1 answer:

SpyIntel [72]4 years ago

4 0

Congruent sides, so isosceles triangle. When we have an isosceles triangle the bisector of angle A is a perpendicular bisector of BC with foot D. So x=ADB=90 degrees.

Angle B is 47 degrees and angle y=BAD is complementary, the other acute angle in a right triangle.

y = 90 - 47 = 43

Answer: x=90, y=43

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1. (x – 6 )(x + 7) = 0

Doss [256]

Answer:

x = 6 and x = -7

Step-by-step explanation:

(x - 6)(x + 7) = 0

x - 6 = 0

x = 6

and

x + 7 = 0

x = -7

5 0

3 years ago

Jonah has a large collection of marbles he notices that if he borrows five marbles from a from a friend he can arrange the marbl

olga nikolaevna [1]

Answer:

The remainder is 8

Step-by-step explanation:

Let Jonah's Marble=x

If he arranges x marbles into y rows of 13 each, and there are remainders(R)

Then:

x/13=y+(R/13).....(I)

If he borrows 5 marbles from a friend, there will be no remainder. However, the number of rows y, will be increased by 1

New Total Marbles=x+5

(x+5)/13=y+1.....(ii)

x+5=13(y+1)

x=13y+13-5

x=13y+8

From (I)

x=13y+R

Comparing the values of x derived from (I) and (ii)

13y+R=13y+8

Therefore the Remainder, R= 8

5 0

4 years ago

Hich of the following is an even function? f(x) = (x – 1)2 f(x) = 8x f(x) = x2 – x f(x) = 7

Ede4ka [16]

Answer:

f(x) = 7 is an even function.

Step-by-step explanation:

Any function is even when $f(x) = f(-x)$ and gives a graph that is symmetric with respect to the y-axis.

We are given these options and we have to check whether which of them is an even function:

$f(x)= (x-1)^2$ $= x^2-2x+1$

and $f(-x) = (-x - 1)^2 = x^2 + 2x + 1$ - This function is not even

$f(x) = 8x$

and $f(-x) = -8x$ - This function is not even

$f(x)=x^2-x$

and $f(-x) = (-x)^2 + x = x² + x$ - This function is not even

$f(x) = 7$

and $f(-x) = 7$ - EVEN FUNCTION

We get the same value for $f(x)$ and $f(-x)$ , therefore f(x) = 7 is an even function.

8 0

3 years ago

Read 2 more answers

Simplify the following by removing the brackets: a (b-c)+d (b-c)

netineya [11]

Answer:

ab - ac + db - dc

Step-by-step explanation:

you distribute the variables inside the parenthesis

4 0

3 years ago

A recipe asks for 4 1/2 pounds of chicken.

Mnenie [13.5K]

Answer:

2/1/2 you need 2and 1/2 of chicken

7 0

3 years ago