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Anettt [7]
3 years ago
12

What is 21 as a decimal and prevent

Mathematics
2 answers:
qwelly [4]3 years ago
5 0
That would be 2.1 because if it's in decimal it's 2.1
mafiozo [28]3 years ago
3 0
21.0 and 2100% idk if that’s ur question tho
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use the graphing calculator to graph the quadratic function y = x2 − 5x − 36. Which value is a solution of 0 = x2 − 5x − 36?
daser333 [38]

The solutions of the quadratic equation x² - 5x - 36 = 0 are -4 and 9.

The graph is attached below.

  • We are given a quadratic function.
  • A polynomial equation of degree two in one variable is a quadratic equation.
  • The function given to us is :
  • y = x² - 5x - 36
  • We need to find the solution of the quadratic function.
  • To find the roots, let y = 0.
  • x² - 5x - 36 = 0
  • Use the quadratic formula.
  • In elementary algebra, the quadratic formula is a formula that gives the solution(s) to a quadratic equation.
  • x = [-b±√b²-4ac]/2a
  • x = [-(-5) ± √25 - 4(1)(-36)]/2(1)
  • x = (5 ± √25 + 144)/2
  • x = (5 ± √169)/2
  • x = (5 ± 13)/2
  • x = 9 or x = -4

To learn more about functions, visit :

brainly.com/question/12431044

#SPJ1

3 0
1 year ago
Melanie is 2 years older than Bill. Bill is 27 years old. After correctly carrying out the Solve step of the five-step problem-s
slava [35]

it should just be 2 + 27 in order to find her age!

8 0
3 years ago
Read 2 more answers
A cube has a side length of 7 cm a cylinder has a radius of 5 cm and a height of 4 cm
densk [106]

Answer:

Cube has larger volume than cylinder.

Step-by-step explanation:

Given:

Side of a cube = 7 cm

Radius of a cylinder (r) = 5 cm

Height of a  (h) = 4 cm  

Find:

Larger volume = ?

Computation:

Volume of cube = Side³

Volume of cube = 7³

Volume of cube = 343 cm³

Volume\ of\  cylinder=\pi r^2h\\\\Volume\ of\  cylinder=\frac{22}{7} (5)^2(4)\\\\Volume\ of\  cylinder= 314.28

Cube has larger volume than cylinder.

5 0
2 years ago
A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken
Leviafan [203]

Answer:

a. H0:μ1≥μ2

Ha:μ1<μ2

b. t=-3.076

c. Rejection region=[tcalculated<−1.717]

Reject H0

Step-by-step explanation:

a)

As the score for group 1 is lower than group 2,

Null hypothesis: H0:μ1≥μ2

Alternative hypothesis: H1:μ1<μ2

b) t test statistic for equal variances

t=(xbar1-xbar2)-(μ1-μ2)/sqrt[{1/n1+1/n2}*{((n1-1)s1²+(n2-1)s2²)/n1+n2-2}

t=63.3-70.2/sqrt[{1/11+1/13}*{((11-1)3.7²+(13-1)6.6²)/11+13-2}

t=-6.9/sqrt[{0.091+0.077}{136.9+522.72/22}]

t=-3.076

c. α=0.05, df=22

t(0.05,22)=-1.717

The rejection region is t calculated<t critical value

t<-1.717

We can see that the calculated value of t-statistic falls in rejection region and so we reject the null hypothesis at 5% significance level.

7 0
3 years ago
Which statement best explains the relationship between ABC and EDC?
Bad White [126]

Answer:

The third one down 0r abc is congruent to edc because m<3=m<4&m<

Step-by-step explanation:

this is because you need three point to prove the congruency of triangles

3 0
3 years ago
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