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
alekssr [168]
3 years ago
6

Emma has a spool of ribbon that has 5 meters on it. She cut a length of ribbon that was 0.9 meters long. Then she cut another le

ngth that was 1.5 meters long. How much of the ribbon is left on the spool?
Mathematics
2 answers:
Inessa05 [86]3 years ago
7 0

Answer:

2.6 meters.

Step-by-step explanation:

5-0.9 is 4.1, minus 1.5 is 2.1.

lina2011 [118]3 years ago
7 0

Answer:

2.6 meters left

Step-by-step explanation:

One way you can solve this problem is by putting it into an equation and finding the difference.

The equation would be 5 - 0.9 - 1.5 = ?

5 - .9 = 4.1

4.1 - 1.5 = 2.6

therefore, 2.6 meters of ribbon will be left on the spool.

You might be interested in
Find the range. 15,18,13,17,15
SSSSS [86.1K]
The answer is 5. The biggest number - the smallest number (18-13=5)
4 0
3 years ago
Consider the points A(5, 3t+2, 2), B(1, 3t, 2), and C(1, 4t, 3). Find the angle ∠ABC given that the dot product of the vectors B
Vilka [71]

Answer:

66.42°

Step-by-step explanation:

<u>Given:</u>

A(5, 3t+2, 2)

B(1, 3t, 2)

C(1, 4t, 3)

BA • BC = 4

Step 1: Find t.

First we have to find vectors BA and BC. We do that by subtracting the coordinates of the initial point from the coordinates of the terminal point.

In vector BA B is the initial point and A is the terminal point.

BA = OA - OB = (5-1, 3t+2-3t, 2-2) = (4, 2, 0)

BC = OC - OB = (1-1, 4t-3t, 3-2) = (0, t, 1)

Now we can find t because we know that BA • BC = 4

BA • BC = 4

To find dot product we calculate the sum of the produts of the corresponding components.

BA • BC = (4)(0) + (2)(t) + (0)(1)

4 = (4)(0) + (2)(t) + (0)(1)

4 = 0 + 2t + 0

4 = 2t

2 = t

t = 2

Now we know that:

BA = (4, 2, 0)

BC = (0, 2, 1)

Step 2: Find the angle ∠ABC.

Dot product: a • b = |a| |b| cos(angle)

BA • BC = 4

|BA| |BC| cos(angle) = 4

To get magnitudes we square each compoment of the vector and sum them together. Then square root.

|BA| = \sqrt{4^2 + 2^2 + 0^2} = \sqrt{20} = 2\sqrt{5}

|BC| = \sqrt{0^2 + 2^2 + 1^2} = \sqrt{5}

2\sqrt{5}\sqrt{5}\cos{(m\angle{ABC})} = 4

10\cos{(m\angle{ABC})} = 4

\cos(m\angle{ABC}) = \frac{4}{10}=\frac{2}{5}

m\angle{ABC} = cos^{-1}{(\frac{2}{5})}

m\angle{ABC} = 66.4218^{\circ}

Rounded to two decimal places:

m\angle{ABC} = 66.42^\circ

3 0
2 years ago
I need help with all of them
patriot [66]
XD
.
Textbooks... Workbooks.
.
I was once homeschooled, ya know. 
.
Let me walk you through the problems.
.
First of all...
.
we know the area of the garden. In order to find how many cups of fertilizer we need, we need to find THE AREA. Then, it's just a matter-of-fact of just multiplying the area by 1/8.
.
2. Information not needed? OF COURSE!! The money. Why we need money in this problem?! We find NUMBER OF CUPS, not MONEY NEEDED.
.
3. I need to determine how much cups of fertilizer I need. The answer? Oh, find the area. IT's 9 1/3 multiplied by 12, by the way. Then multiply the area by 1/8. BOOM!!
.
Need any more help, ask away!!
3 0
3 years ago
Which table represents the equation y = -2x + 17?
Alexeev081 [22]
<h3>Answer: Choice A</h3>

Explanation:

Each table has x = 10 in it. Plug this value into the given equation.

y = -2x+17

y = -2*10+17

y = -20+17

y = -3

The input x = 10 leads to the output y = -3. Table A shows this in the middle-most row. So that's why choice A is the answer. The other tables have x = 10 lead to y values that aren't -3 (eg: choice D has x = 10 lead to y = 12), so we can rule them out.

7 0
2 years ago
A man can paint one house in 12 hours. At this rate, how many houses could 18 men paint in 6 hours
OverLord2011 [107]

Answer:

i want to say 36, im not 100% sure though

Step-by-step explanation:


8 0
3 years ago
Read 2 more answers
Other questions:
  • A financial talk show host claims to have a 55.3 % success rate in his investment recommendations. You collect some data over th
    14·1 answer
  • Which statements must be true about the reflection of ΔXYZ across Line M N? Select three options.
    6·2 answers
  • lvava is calculating the area of a circle with a radius of 3/4 which of the following gives the BEST estimation of the area?
    5·1 answer
  • What is r - 9 for r= 20
    9·2 answers
  • D is the midpoint of CE. E has coordinates (-6, -2), and D has coordinates (2, 2). Find the coordinates of
    12·1 answer
  • Does the denominator represents the part or the whole of a fraction ? Yes or no
    11·2 answers
  • A music company sells music to download, they charge $7.00 for each album and $1.50 for each song. On monday the company sold a
    8·1 answer
  • VOTING In a recent school election, 208
    14·2 answers
  • Given:
    6·1 answer
  • If m∠ADB=(6x−4)° and m∠BDC=(4x+24)°, find the value of x such that ∠ADC is a right angle.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!