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
adell [148]
3 years ago
15

Lisa wants to frame her little brothers drawing as a gift to her mother.the rectangle drawing is 43.5 centimeters by 934 millime

ters.How many centimeters of wood framing will she need
Mathematics
1 answer:
konstantin123 [22]3 years ago
7 0

Answer:

Lisa will need 273.8\ cm of wood framing

Step-by-step explanation:

we know that

The perimeter of rectangle is equal to

P=2(b+h)

In this problem we have

b=43.5\ cm

h=934\ mm

convert to cm

Remember that  1\ cm=10\ mm

h=934\ mm=934/10=93.4\ cm

substitute the values and solve the perimeter

P=2(43.5+93.4)=273.8\ cm

You might be interested in
Someone help me answer this
dolphi86 [110]

Answer:

c = 53 yd is the answer.

Step-by-step explanation:

a = 45 yd

b = 28 yd

c = ?

According to the Pythagorean Theorem,

a² + b² = c²

45² + 28² = c²

2025 + 784 = c²

c² = 2809

c = 53 yd

∴ The dog runs 53 yd

6 0
3 years ago
A sample of 81 account balances of a credit company showed an average balance of $1,200 with a standard deviation of $126.
TEA [102]

Answer:

(a) Null Hypothesis, H_0 : \mu = $1,150  

    Alternate Hypothesis, H_A : \mu \neq $1,150

(b) The test statistic is 3.571.

(c) We conclude that the mean of all account balances is significantly different from $1,150.

Step-by-step explanation:

We are given that a sample of 81 account balances of a credit company showed an average balance of $1,200 with a standard deviation of $126.

We have test the hypothesis to determine whether the mean of all account balances is significantly different from $1,150.

<u><em>Let </em></u>\mu<u><em> = mean of all account balances</em></u>

(a)So, Null Hypothesis, H_0 : \mu = $1,150     {means that the mean of all account balances is equal to $1,150}

Alternate Hypothesis, H_A : \mu \neq $1,150    {means that the mean of all account balances is significantly different from $1,150}

The test statistics that will be used here is <u>One-sample t test statistics</u> as we don't know about population standard deviation;

                               T.S.  = \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample average balance = $1,200

             s = sample standard deviation = $126

             n = sample of account balances = 81

(b) So, <u>test statistics</u>  =  \frac{1,200-1,150}{\frac{126}{\sqrt{81} } }  ~ t_8_0

                               =  3.571

The value of the sample test statistics is 3.571.

(c) <u>Now, P-value of the test statistics is given by the following formula;</u>

          P-value = P( t_8_0 > 3.571) = <u>Less than 0.05%</u>

Because in the t table the highest critical value for t at 80 degree of freedom is given between 3.460 and 3.373 at 0.05% level.

Now, since P-value is less than the level of significance as 5% > 0.05%, so we sufficient evidence to reject our null hypothesis.

Therefore, we conclude that the mean of all account balances is significantly different from $1,150.

8 0
3 years ago
State the independent variable and dependent variable and find the slope.
Rudik [331]
Time is your independent variable, and snowfall is your dependent variable.

Slope can be found by calculating ∆y/∆x:
x =  \frac{0.06 - 0.02}{3 - 1}  \\ x =   \frac{0.04}{2}  \\ x = 0.02

Snowfall will accumulate 0.02 m every hour.
4 0
3 years ago
A) Why are all parallelograms not rectangles?
GrogVix [38]

a) Rectangles always have 4 right angles (90 degrees), but parallelograms do not always have 4 right angles rather they can, but do not have to. Rectangles have to.

b) A square is a type of rectangle, but a rectangle is not a type of square. Both rectangles & squares have 4 right angles and are always quadrilaterals, but squares always have all sides that have the same length, but rectangles do not have to have their sides all equivalent lengths.

c) In the case of a parallelogram, the opposite sides are equal whereas in a rhombus all four sides are equal.


8 0
3 years ago
a central angle of circle of radius 50cm intercept an arc of 10 cm .Express central angle in radian n in degree​
Elodia [21]

Answer:

11.7 degrees approximated to 12 degrees

Step-by-step explanation:

couldn't send the answer as 1 photo

7 0
3 years ago
Other questions:
  • What is the distributive property for 8 times 19
    7·1 answer
  • A minority representation group accuses a major bank of racial discrimination in its recent hires for financial analysts. Exactl
    15·1 answer
  • A student answered this story problem. Use estimation to check the student's answer. Lizzie has $49. Her older sister has $184.
    7·1 answer
  • HELP FAST NOT SURE WHAT TO DO
    8·1 answer
  • As your sixteenth birthday approaches you are looking for ways to make money so you can buy a used car. Currently, you earn $10
    8·1 answer
  • A garden measuring 12 meters by 6 meters is going to have a walkway constructed all around the perimeter, increasing the total a
    12·2 answers
  • (4+4)÷22×2<br><br> plss someone answer hurry &lt;3
    6·2 answers
  • 2. χΣ -4<br> Please help
    5·1 answer
  • Can you help me with this 20 points!!!!
    11·1 answer
  • If a¹/n =r then which of the following are true statements?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!