1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kenny6666 [7]
3 years ago
8

Use the order of operations to simplify this expression 4 + 0.8 x 1.5 - 3

Mathematics
1 answer:
Scilla [17]3 years ago
3 0

You would use PEMDAS to solve this:

0.8 x 1.5 = 1.2

4 + 1.2 - 3

5.2 - 3

2.2 is your answer

You might be interested in
Is the portion 15 / 3 equals 2y / 7 what number is the y in the proportion
GuDViN [60]

Answer:

y = 105 ÷ 6 = 35/2

Step-by-step explanation:

∵ 15/3 = 2y/7

∴ 2y × 3 = 15 × 7

∴ 6y = 105

∴ y = 105 ÷ 6 = 35/2

4 0
3 years ago
Read 2 more answers
What is the scale factor used to create this dilation?
jenyasd209 [6]
If it is going from the big to the small then the dialation is 1/2. If it is going from small to big then the dialation is 2. I don't know which direction they are going
7 0
3 years ago
Read 2 more answers
What is 865 divided by 40
Nutka1998 [239]
21.625 is your answer to 865/40
5 0
3 years ago
Question 1:
Morgarella [4.7K]

Answer:

Step-by-step explanation:

KE = ½mv²

KE₁₀ = ½(1100)10² = 55000 = 55 kJ

KE₃₀ = ½(1100)30² = 495000 = 495 kJ

9 times greater

3 0
2 years ago
Let $P$ and $Q$ be constants. The graphs of the lines $x + 5y = 7$ and $15x + Py = Q$ are perpendicular and intersect at the poi
Marta_Voda [28]

Answer:

<em>(-3, -129)</em>

<em></em>

Step-by-step explanation:

Given

Two lines:

$x + 5y = 7$

$15x + Py = Q$

are perpendicular to each other and intersect at point (-8,3).

To find: (P, Q)

Solution:

The two lines intersect at (-8,3).

It means, the equation of line will be satisfied when we put value of x = -8 and y = 3

Putting in the second equation, we will get an equation in P and Q:

15\times (-8) + P \times 3 = Q\\\Rightarrow 3P = Q +120 ..... (1)

Given that two lines are perpendicular.

It means the product of their slopes will be equal to -1.

i.e. m_1\times m_2=-1

Slope of a line of the form ax+by+c=0 is given as:

m=-\dfrac{a}{b}

So, slopes of given lines are:

m_1=-\dfrac{1}{5}\\m_2=-\dfrac{15}{P}

Using the condition:

-\dfrac{1}{5}\times \dfrac{-15}{P}=-1\\\Rightarrow P = -3

Putting the value of P in equation (1):

\Rightarrow 3\times (-3) = Q +120 \\\Rightarrow Q = -9-120 = -129

So, answer is <em>(-3, -129)</em>

7 0
3 years ago
Other questions:
  • What is the measure of ∠Q?
    8·1 answer
  • Find the volume of a right circular cone that has a height of 4.3 m and a base with a circumference of 17.6 m. Round your answer
    5·1 answer
  • Solve using elimination.<br> 6x + 8y = -4<br> -6x - 10y = 14
    7·2 answers
  • Evaluate the expression 6xy + 3x + y when x = 3 and y = 1.
    7·2 answers
  • Hirva stopped to get gas and noted the milage on her car was 23,615. The next time she stopped to get gas, the mileage was 24,25
    6·1 answer
  • How do you use a protractor
    11·1 answer
  • NEED HELP NOW. WILL GIVE BRAINLIEST
    5·2 answers
  • Find the 11th term of the geometric sequence 6, -18,54, ...
    12·2 answers
  • Can someone help me with this?
    7·1 answer
  • The area of a triangle is 48cm^2. The height of the triangle is 6cm. Calculate the length of the base
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!