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3 years ago

Find – 8 + (-15) A: 23 B: -23 C: -7 D: 7

Mathematics

2 answers:

adell [148]3 years ago

6 0

Answer:

B: -23

Step-by-step explanation:

$-8+(-15)\\\\-8-15\\\\\boxed{-23}$

Option B should be the correct answer.

Hope this helps.

malfutka [58]3 years ago

4 0

B. -23
You add and keep the negative symbol since they are both negatives and you are adding.

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A dozen apples cost$4.92 for a dozen apples is a ratio of what per Apple

serg [7]

Answer:

12 : 4.92

Step-by-step explanation:

a= apples

12a=4.92

12 : 4.92

3 0

3 years ago

Geometry Special Quadrilaterals show work please

Charra [1.4K]

Answer:

a = 16

w = 125

x = 120

y = 55

Step-by-step explanation:

FINDING 'a'

31 = a + 46 / 2

62 = a + 46

16 = a

FINDING 'w'

* This section looks Non-Isosceles trapezoid so I will be following the rule according it

w + 55 = 180

w = 125

FINDING 'y'

y = 55

- Because of corresponding angles

FINDING 'x'

* In this case it looks like we are still dealing w/ an non-isosceles trapezoid.

x + 60 = 180

x = 120

Hope this helped ^^

(Please inform me of any mistakes or misunderstandings!)

6 0

3 years ago

Classify the limaçon represented by the equation r=(1/2)-(1/2)sin(theta)

babunello [35]

We know that

Limacons are in the form
r=a(+-)b*sin (theta) or r=a(+-)b*cos (theta)

in this problem
r=a(+-)b*sin (theta)
so
is symmetric to y axis
a=1/2
b=1/2
a/b=1---------> Cardioid (hearth shaped)

see the attached figure

the answer is the option
A. Cardioid