3 years ago

If sin x = 0.5, what does sin (-x) equal ?

Mathematics

1 answer:

zvonat [6]3 years ago

4 0

Sin (-x) should equal -0.5

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Tess left her home and drove for 3.7 hours due north at a rate of 60 miles per hour. After attending a concert, she drove due so

Free_Kalibri [48]

Answer: 145

3.7 x 60 = 222 (how far north she drove)

1.4 x 55 = 77 (how far south she drove)

222 - 77 = 145 (how far from home)

8 0

3 years ago

What is the common difference for the arithmetic sequence -5,-1,3,7

weeeeeb [17]

Answer: 4

-5+4=-1

-1+4=3

3+4=7

I hope this is good enough:

4 0

3 years ago

The sum of Jim's weight and Bob's weight is 180 pounds. If you subtract Jim's weight from Bob's weight, you get half of Bob's we

Furkat [3]

Answer:

120 pounds

Step-by-step explanation:

We can use systems of equations to solve this problem. Assuming j is Jim's weight and b is Bob's weight, the equations are:

j + b = 180

b - j = 1/2b

Let's get b - j = 1/2b into standard form (b, then j, then the equal sign, then the constant.)

$b - j = \frac{b}{2}\\\frac{b}{2} - j = 0$

Now we can solve using the process of elimination.

$b + j = 180\\\\\frac{b}{2} - j = 0\\\\b + \frac{b}{2} = 180\\\\b + b \cdot 2 = 180\cdot 2\\3b = 360\\b = 120$

Now we know how much Bob weighs, for fun, let's find Jim's weight by substituting into the equation.

$120 + j = 180\\j = 180-120\\j = 60$

So Bob weighs 120 pounds and Jim weight 60 pounds.

Hope this helped!

4 0

3 years ago

Read 2 more answers

I need help pleaseee!!!!!!!!!!

vovikov84 [41]

<h2>Answer:</h2>

Using the distributive property, we can simplify the expression.

4 × 3 = 12

4 × $\frac{1}{4}$ = 1

4 × $(-\frac{1}{2})$ = -2

Here is the simplified expression:

$12 + c - 2d$

6 0

3 years ago

After spending $43 on groceries and $19 on a book, Mrs. Groom had $16 left. How much money did Mrs. Groom have to begin with?

vitfil [10]

Do $43+19+16=$78

He started with $78

4 0

3 years ago

Read 2 more answers