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Tcecarenko [31]
3 years ago
10

What is -12.5-8.3

smiddle" class="latex-formula">
​
Mathematics
2 answers:
photoshop1234 [79]3 years ago
8 0

Answer:

Step-by-step explanation:

-(12.5+8.3) = - 20.8

Mama L [17]3 years ago
5 0

If it’s a negative equation is should be -20.8 otherwise it’s 4.2

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Jackie brought 6 books for b dollars each and 3 magazines for m dollars each. Which expression represents the total amount in do
USPshnik [31]

Answer:

6b+3m

Step-by-step explanation:

I hope this helped.

7 0
3 years ago
Solve the system of equations for x and y.<br> y = x + 5<br> y = 2x + 2
DIA [1.3K]
Answer (x,y) (3, -2)

Explanation:
using the
substitution method
y
=
x
−
5
→
(
1
)
y
=
−
2
x
+
4
→
(
2
)
since both equations are expressed in terms of x we

can equate them
⇒
x
−
5
=
−
2
x
+
4
add 2x to both sides
2
x
+
x
−
5
=
−
2
x
+
2
x
+
4
⇒
3
x
−
5
=
4
add 5 from both sides
3
x
+
5
−
5
=
4
+
5
⇒
3
x
=
9
divide both sides by 3
3
x
3
=
9
3
⇒
x
=
3
substitute this value in
(
1
)
y
=
3
−
5
=
−
2
As a check
substitute these values into
(
2
)
right
=
−
6
+
4
=
−
2
=
left
⇒
point of intersection
=
(
3
,
−
2
)
3 0
2 years ago
Which trigonometric function best describes the graph below?
yanalaym [24]
The function is the Sine Curve

y = sine (x)
8 0
3 years ago
A tree is 8 feet and 11 inches tall.
Nataly_w [17]

Answer:

2.72 meters

Hope that this helps!

7 0
2 years ago
Simplify: (cos^2x-1)/cosx+1
gizmo_the_mogwai [7]

The solution would be like this for this specific problem:

(cos^2x-1)/cosx+1

cos^2x-1= (cosx+1)(cosx-1)

cosx-1

<span>I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.</span>

5 0
3 years ago
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