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2 years ago

Which rule explains why these triangles are congruent?

Mathematics

2 answers:

ss7ja [257]2 years ago

8 0

Answer:

SAS is the rule

Step-by-step explanation:

mestny [16]2 years ago

6 0

The triangles are congruent due to SAS

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The world brand of rivet placement is 11209 rivets in 9 hours and belongs to J. Mair of Ireland. If another person places 11209

Ilya [14]

Answer:

4.74 hours

Step-by-step explanation:

Given that both person have to place same number of rivets that is

11209

first person take 9 hours to complete the work

hence 1 hour work of 1st person is $\frac{1}{9}$ of total work

second person takes 10 hours to complete the same work

hence 1 hour work of 2nd person is $\frac{1}{10}$

Now if both work together then

1 hour work of both person = $\frac{1}{9} +\frac{1}{10}$ = $\frac{19}{90}$

thus working together they need $\frac{90}{19}$ hours = 4.74 hours to complete the whole work which is placing 11209 rivets

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3 years ago

Convert 15.5 feet to<br>meters.

frutty [35]

Step-by-step explanation:

15.5 feet to meter =4.7244

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2 years ago

Volume of cone is 1,610.82 cubic meters what is the height

allochka39001 [22]

h = 19 Meters

To make sure it's the correct answer, plug it in the volume formula for a cone.

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2 years ago

without carrying a tank bottoms has the size of 3 to 6 m. Find out how many cans of paint of 2 kg are required to paint the insi

RUDIKE [14]

I think its 3.33 not for sure

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3 years ago

Read 2 more answers

2x2 – 9x + 2 = –1

Reika [66]

Answer:

C) The discriminant is greater than 0, so there are two real roots

Step-by-step explanation:

<u>Discriminant</u>

$b^2-4ac\quad\textsf{when}\:ax^2+bx+c=0$

$\textsf{when }\:b^2-4ac > 0 \implies \textsf{two real roots}$

$\textsf{when }\:b^2-4ac=0 \implies \textsf{one real root}$

$\textsf{when }\:b^2-4ac < 0 \implies \textsf{no real roots}$

$2x^2-9x+2=-1$

$\implies 2x^2-9x+3=0$

$\implies a=2, b=-9, c=3$

$\begin{aligned}b^2-4ac &=(-9)^2-4(2)(3)\\& =81-24\\&=57 > 0\implies \textsf{two real roots}\end{aligned}$

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2 years ago