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
kow [346]
3 years ago
5

Keirra’s mother gave her $7.50 to buy 8 spiral notebooks. With tax, the cost of each notebook is $1.05. Does Keirra have enough

money? Use compatible numbers and estimation to help you decide.
Mathematics
1 answer:
GuDViN [60]3 years ago
7 0

Answer:

No

Step-by-step explanation:

each notebook is $1.05 and the is $7.50

there is only enough for seven notebooks not eight.

You might be interested in
Whats 9+10? does anyone know
Anvisha [2.4K]
People keep saying its 21 but I know from my brainily skills that it is 18
5 0
3 years ago
The National Research Council recommends keeping a 1:3, colon, 3 copper to zinc ratio in a horse's diet. If the horse is getting
kap26 [50]

Step-by-step explanation:

Below is an attachment containing the solution.

4 0
3 years ago
Given that 'n' is a natural number. Prove that the equation below is true using mathematical induction.
LenaWriter [7]

<h3>To ProvE :- </h3>

  • 1 + 3 + 5 + ..... + (2n - 1) = n²

<u>Method</u><u> </u><u>:</u><u>-</u>

If P(n) is a statement such that ,

  1. P(n) is true for n = 1
  2. P(n) is true for n = k + 1 , when it's true for n = k ( k is a natural number ) , then the statement is true for all natural numbers .

\sf\to \textsf{ Let P(n) :  1 + 3 + 5 + $\dots$ +(2n-1) = n$^{\sf 2}$ }

Step 1 : <u>Put </u><u>n </u><u>=</u><u> </u><u>1</u><u> </u><u>:</u><u>-</u><u> </u>

\sf\longrightarrow LHS = \boxed{\sf 1 } \\

\sf\longrightarrow RHS = n^2 = 1^2 = \boxed{\sf 1 }

Step 2 : <u>Assume </u><u>that </u><u>P(</u><u>n)</u><u> </u><u>is </u><u>true </u><u>for </u><u>n </u><u>=</u><u> </u><u>k </u><u>:</u><u>-</u>

\sf\longrightarrow 1 + 3 + 5 + \dots + (2k - 1 ) = k^2

  • Add (2k +1) to both sides .

\sf\longrightarrow 1 + 3+5+\dots+(2k-1)+(2k+1)=k^2+(2k+1)

  • RHS is in the form of ( a + b)² = a²+b²+2ab .

\sf\longrightarrow 1 + 3+5+\dots+(2k-1)+(2k+1)= (k +1)^2

  • Adding and subtracting 1 to LHS .

\sf\longrightarrow 1 + 3+5+\dots+(2k-1)+(2k+1) + 1 -1  = (k +1)^2 \\

\sf\longrightarrow 1 + 3+5+\dots+(2k-1)+(2k+2) - 1 = (k +1)^2

  • Take out 2 as common .

\sf\longrightarrow 1 + 3+5+\dots+(2k-1)+\{2(k+1)-1\}= (k +1)^2

  • P(n) is true for n = k + 1 .

Hence by the principal of Mathematical Induction we can say that P(n) is true for all natural numbers 'n' .

<em>*</em><em>*</em><em>Edits</em><em> are</em><em> welcomed</em><em>*</em><em>*</em>

8 0
2 years ago
Read 2 more answers
1/4x20 in fraction for prodigy math game
kirill [66]

Answer: 5

Step-by-step explanation: Convert any mixed numbers to fractions.

Then your initial equation becomes:  1/4 x 20/1

Applying the fractions formula for multiplication,

=1/4 x 20/1  = 20/4

Simplifying 20/4, the answer is

=5

6 0
2 years ago
Read 2 more answers
A 16 ft ladder leans against the side of a house. The bottom of the ladder is 7 ft away from the side of the house. Find x , the
anzhelika [568]
Check the picture below.

make sure your calculator is in Degree mode.

3 0
3 years ago
Other questions:
  • Solve the following equation: lim x-&gt;0 sin3x/5x^3-4x.
    13·1 answer
  • What’s the percentage of 17/28
    12·1 answer
  • Find the missing angle<br> measures marked with<br> question marks.
    7·1 answer
  • I answered a question correctly and someone deleted my answer without giving me any explanation. I don't know why someone would
    9·2 answers
  • Dimension of a cuboid is 4 m 3 m ad 5 m how many such cuboid can form a cube....... please and urgent..experts please help
    9·1 answer
  • What would the graph of the solution to the following inequality look like?
    9·1 answer
  • Twenty-one students took a mathematics test. The 11th highest score on the test was a 76. Which of the
    7·2 answers
  • Simplify.<br><br> 3(y+7)+8y<br><br><br> Please answere
    15·2 answers
  • What is the median of these figure skating ratings?<br> 5.0 6.0 7.0 7.5 8.0 9.0 10.0
    11·1 answer
  • What is the 99th digit of pie?​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!