Resources
Testimonials
Plans
Sign in
Sign up
Resources
Testimonials
Plans
AI tutor
Welcome to Bytelearn!
Let’s check out your problem:
Evaluate the expression for
r
=
−
0.8
r = -0.8
r
=
−
0.8
.
\newline
Write your answer as a decimal or
whole number
.
\newline
19.2
r
=
19.2r =
19.2
r
=
_____
View step-by-step help
Home
Math Problems
Algebra 1
Evaluate variable expressions involving rational numbers
Full solution
Q.
Evaluate the expression for
r
=
−
0.8
r = -0.8
r
=
−
0.8
.
\newline
Write your answer as a decimal or whole number.
\newline
19.2
r
=
19.2r =
19.2
r
=
_____
Substitute value into expression:
Substitute the given value of
r
r
r
into the expression.
\newline
Expression:
19.2
×
(
−
0.8
)
19.2 \times (-0.8)
19.2
×
(
−
0.8
)
Multiply to find value:
Multiply
19.2
19.2
19.2
by
−
0.8
-0.8
−
0.8
to find the value of the expression.
\newline
Calculation:
19.2
×
−
0.8
=
−
15.36
19.2 \times -0.8 = -15.36
19.2
×
−
0.8
=
−
15.36
More problems from Evaluate variable expressions involving rational numbers
Question
What is the midline equation of
\newline
y
=
−
9
cos
(
π
2
x
−
6
)
+
8
?
y
=
□
\begin{array}{l} y=-9 \cos \left(\frac{\pi}{2} x-6\right)+8 ? \\ y=\square \end{array}
y
=
−
9
cos
(
2
π
x
−
6
)
+
8
?
y
=
□
Get tutor help
Posted 10 months ago
Question
z
=
11.1
i
−
45
z=11.1 i-45
z
=
11.1
i
−
45
\newline
Re
(
z
)
=
Im
(
z
)
=
\begin{array}{l}\operatorname{Re}(z)= \\ \operatorname{Im}(z)=\end{array}
Re
(
z
)
=
Im
(
z
)
=
Get tutor help
Posted 10 months ago
Question
(
−
14
+
3
i
)
−
(
14
i
)
=
(-14+3 i)-(14 i)=
(
−
14
+
3
i
)
−
(
14
i
)
=
\newline
Express your answer in the form
(
a
+
b
i
)
(a+b i)
(
a
+
bi
)
.
Get tutor help
Posted 10 months ago
Question
(
12
−
9
i
)
+
(
32
−
6
i
)
=
(12-9 i)+(32-6 i)=
(
12
−
9
i
)
+
(
32
−
6
i
)
=
\newline
Express your answer in the form
(
a
+
b
i
)
(a+b i)
(
a
+
bi
)
.
Get tutor help
Posted 10 months ago
Question
What happens to the value of the expression
3
y
2
y
\frac{3 y}{2 y}
2
y
3
y
as
y
y
y
increases?
\newline
Choose
1
1
1
answer:
\newline
(A) It increases.
\newline
(B) It decreases.
\newline
(C) It stays the same.
Get tutor help
Posted 10 months ago
Question
Find the following trigonometric values.
\newline
Express your answers exactly.
\newline
cos
(
7
π
4
)
=
□
sin
(
7
π
4
)
=
□
\begin{array}{l} \cos \left(\frac{7 \pi}{4}\right)=\square \\ \sin \left(\frac{7 \pi}{4}\right)=\square \end{array}
cos
(
4
7
π
)
=
□
sin
(
4
7
π
)
=
□
Get tutor help
Posted 10 months ago
Question
Which equation has a constant of proportionality equal to
3
3
3
?
\newline
Choose
1
1
1
answer:
\newline
(A)
y
=
8
5
x
y=\frac{8}{5} x
y
=
5
8
x
\newline
(B)
y
=
1
3
x
y=\frac{1}{3} x
y
=
3
1
x
\newline
(C)
y
=
1
4
x
y=\frac{1}{4} x
y
=
4
1
x
\newline
(D)
y
=
18
6
x
y=\frac{18}{6} x
y
=
6
18
x
Get tutor help
Posted 10 months ago
Question
Reduce to simplest form.
\newline
−
5
8
+
(
−
8
5
)
=
-\frac{5}{8}+\left(-\frac{8}{5}\right)=
−
8
5
+
(
−
5
8
)
=
Get tutor help
Posted 10 months ago
Question
Reduce to simplest form.
\newline
−
1
4
−
(
−
3
5
)
=
-\frac{1}{4}-\left(-\frac{3}{5}\right)=
−
4
1
−
(
−
5
3
)
=
Get tutor help
Posted 10 months ago
Question
Reduce to simplest form.
\newline
−
1
3
−
(
−
3
5
)
=
-\frac{1}{3}-\left(-\frac{3}{5}\right)=
−
3
1
−
(
−
5
3
)
=
Get tutor help
Posted 10 months ago
Related topics
Algebra - Order of Operations
Algebra - Distributive Property
`X` and `Y` Axes
Geometry - Scalene Triangle
Common Multiple
Geometry - Quadrant