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Stolb23 [73]
3 years ago
7

ΔABC is an isosceles triangle with AB = BC = 6 units, D and E are the midpoints of AB and BC respectively.The length of AC is 8

units. The length DE is__units.
Mathematics
1 answer:
shutvik [7]3 years ago
4 0
4 units. DE=1/2 AC.....
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Please help!
blagie [28]
Given the two options above, in order to come up with the best plan we have to calculate the future value of money in each plan.
compound interest is given by:FV=p(1+ \frac{r}{100})^n

Option 1
p=$500
r=2%=0.02
t=1 year
FV=500(1+0.02)^1=$510

Option 2
p=$500
r=2/12=1/6
n=1*12=12
hence:
FV=500(1+\frac{ \frac{1}{6}}{100})^{12}

=$509.09
Comparing the two plans above, option 1 is the best.

b] Option 1 is the best because she will secure $510 as compared to option 2 which has interest rate that reduces her amount by $1 after one year due to annual charges. The total amount of money she will have at the end of the plan is $510. 


8 0
3 years ago
Plsssss<br>do all of the questions and I give you brainlist .make sure they are right ​
ozzi

Answer:

1) 6,000 B) 800 C) 4,000

2)7,500

3)third and fourth one

4)6,951

Step-by-step explanation:

just because

6 0
3 years ago
Read 2 more answers
The graph of a linear function passes through the points (-1, -1/4) and (1, -3/4). Which equation represents the function ?
lyudmila [28]

The equation of the line will be given as y = -4x - (- 17/ 4).

<h3>What is an equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.


Given that:-

  • The graph of a linear function passes through the points (-1, -1/4) and (1, -3/4).

The equation of the line will be given as:-

y  -  y₁ = m ( x  -  x₁)

slope m will be calculated as:-

m =\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{1+1}{\dfrac{-3}{4}+\dfrac{1}{4}}=-4

The equation will be:-

y  -  (1/4)  =  -4( x +  1 )

y  = -4x  -  (17/4)

Therefore the equation of the line will be given as y = -4x - (- 17/ 4).

To know more about equations follow

brainly.com/question/2972832

#SPJ1

3 0
2 years ago
(a) 26 is what percent of 40? 65% (b) 85% of 80 is what number?
Marizza181 [45]
A) 65%
b) 68

26:40 as x:100
26/40 = x/100
Cross multiply
2600 = 40x
x = 65
———————
85% of 80
0.85 is the decimal equivalent of 85%
80 x 0.85 = 68
6 0
3 years ago
I NEED A ANSWER FAST PLEASE HELP
NikAS [45]

Answer:

Elevation in boiling point is mathematically expressed as

ΔTb = Kb X m

where Kb =  boiling point elevation constant =  2.53°c/m (for benzene)

m = molality of solution = 3.47 m (given)

∴ ΔTb = 2.53 X 3.47

          = 8.779 oC

But, boiling point of benzene = 80.1 oC

∴ Boiling point of solution = 88.879 oC

Now, Depression in freezing point = ΔTf = Kf X m

where, Kf = freezing point depression constant = 5.12°c/m (for benzene)

∴ ΔTf = 5.12 X 3.47

        = 17.766 oC

But freezing point of benzene = 5.5 oC

∴ Freezing point of solution = -12.266 oC

3 0
3 years ago
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