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3 years ago

Use the Order of Operations to evaluate this expression

Mathematics

1 answer:

Veronika [31]3 years ago

6 0

(-2+1^2)+5(12/3)-9
(1)+5(4)-9
1+20-9
21-9
12

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Petra is making necklaces to sell at craft. the hardware for each necklace is 3.75 and each bead costs 0.50. The number of beads

kap26 [50]

Answer:

T=112.5+0.50*b (since there was not a given number of beads)

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3 years ago

Given: See the diagram.

natka813 [3]

Answer:

A. ASA criterion for congruent triangles.

Step-by-step explanation:

Given DG is perpendicular bisector of CA and DH is perpendicular bisector of AB.

In triangle DGC and DGA

DG=DG( reflexive property of equality)

$\angle DGA=\angle DGC=90^{\circ}$ ( given )

$\angle ADG=\angle CDG$ ( by definition of perpendicular bisector)

$\therefore \triangle AGD\cong \triangle CGD$ ( ASA postulate)

Similarly, In triangle ADH and triangle BDH

DH=DH ( reflexive property of equality)

$\angle DHA=\angle DHB=90^{\circ}$ (given)

$\angle ADH=\angle BDH$ ( By definition of perpendicular bisector)

$\therefore \triangle ADH\cong \triangle BDH$ ( ASA postulate)

1.Statement: $\overline{DG}\perp \overline{AC}$

Reason: Given.

2. Statemnet: AG=GC

Reason: Given

3. Statement: $\overline{DG}$ is perpendicular bisector of $\overline{AC}$

Reason: from step 1 and step 2.

4.Statement: DA=DC

Reason: ASA criterion for congruent triangles.

5 .Statement: $\overline{DH} \perp \overline{AB}$

Reason: Given

6. Statement:AH=HB

Reason:Given

7.Statement: $\overline{DH}$ si perpendicular bisector $\overline{AB}$

Reason: By definition of perpendicular bisector.

8.Statement: DA=DB

Reason : ASA criterion for congruent triangles.

9.Statement: DC=DB

Reason: Transitive property of equality.

Hence proved.

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4 years ago

Read 2 more answers

Find the area of the figure below.

Dmitrij [34]

Answer:

266.2

Step-by-step explanation:

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3 years ago

meghann drives 486 miles on the highway to visit her cousin. she uses cruise control to drive at a constant speed. Meghana trave

Lubov Fominskaja [6]

To find how long the trip will take, you first divide the number of miles she has already driven and divide by the time it has taken to get that far to get the unit rate,
216 miles/ 4 hours= 54 miles/ hour. Next take the number of total miles she has to drive and divide that by the unit rate you found earlier, 486 miles/ 54 mph , to get how long the entire trip will take her to complete, 486/ 54= 9 hours total. so she has only 5 hours left to drive

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3 years ago

A decimal number is an irrational number

Alinara [238K]

The answer is not true

4 0

3 years ago